chatmail-core/CHANGELOG.md

# Changelog 

## UNRELEASED

- breaking change: You have to call dc_stop_io()/dc_start_io() before/after EXPORT_BACKUP:
  fix race condition and db corruption when a message was received during backup #2253

- save subject for messages:
  new api `dc_msg_get_subject()`,
  when quoting, use the subject of the quoted message as the new subject, instead of the
  last subject in the chat

- new apis to get full or html message,
  `dc_msg_has_html()` and `dc_get_msg_html()` #2125 #2151

- new chat type and apis for the new mailing list support,
  `DC_CHAT_TYPE_MAILINGLIST`, `dc_msg_get_real_chat_id()`,
  `dc_msg_get_override_sender_name()` #1964 #2181 #2185 #2195 #2211 #2210 #2240
  #2243

- new api `dc_decide_on_contact_request()`,
  deprecated `dc_create_chat_by_msg_id()` and `dc_marknoticed_contact()` #1964

- new flag `DC_GCM_INFO_ONLY` for api `dc_get_chat_msgs()` #2132

- new api `dc_get_chat_encrinfo()` #2186

- new api `dc_contact_get_status()`, returning the recent footer #2218

- improve contact name update rules,
  add api `dc_contact_get_auth_name()` #2206 #2212 #2225

- new api for bots: `dc_msg_set_html()` #2153

- new api for bots: `dc_msg_set_override_sender_name()` #2231

- api removed: `dc_is_io_running()` #2139

- api removed: `dc_contact_get_first_name()` #2165 #2171

- implement Consistent Color Generation (XEP-0392),
  that results in contact colors be be changed #2228 #2229 #2239

- fetch recent existing messages
  and create corresponding chats after configure #2106

- improve e-mail compatibility
  by scanning all folders from time to time #2067 #2152 #2158 #2184 #2215 #2224

- better support videochat-services not supporting random rooms #2191

- export backups as .tar files #2023

- scale avatars based on media_quality, fix avatar rotation #2063

- compare ephemeral timer to parent message to deal with reordering better #2100

- better ephemeral system messages #2183

- read quotes out of html messages #2104

- prepend subject to messages with attachments, if needed #2111

- run housekeeping at least once a day #2114

- resolve MX domain only once per OAuth2 provider #2122

- configure provider based on MX record #2123 #2134

- make transient bad destination address error permanent
  after n tries #2126 #2202

- enable strict TLS for known providers by default #2121

- improve and harden secure join #2154 #2161

- update `dc_get_info()` to return more information #2156

- prefer In-Reply-To/References
  over group-id stored in Message-ID #2164 #2172 #2173

- apply gossiped encryption preference to new peerstates #2174

- fix: do not return quoted messages from the trash chat #2221

- fix: allow emojis for location markers #2177

- fix encoding of Chat-Group-Name-Changed messages that could even lead to
  messages not being delivered #2141

- fix error when no temporary directory is available #1929

- fix marking read receipts as seen #2117

- fix read-notification for mixed-case addresses #2103

- fix decoding of attachment filenames #2080 #2094 #2102

- fix downloading ranges of message #2061

- fix parsing quoted encoded words in From: header #2193 #2204

- fix ci #2217 #2226

- try harder on backup opening #2148

- switch to rust 1.50, update toolchains, deps #2150 #2155 #2165 #2107 #2262 #2271

- improve python bindings #2113 #2115 #2133 #2214

- improve documentation #2143 #2160 #2175 #2146

- refactorings #2110 #2136 #2135 #2168 #2178 #2189 #2190 #2198 #2197 #2201 #2196
  #2200 #2230


## 1.50.0

- do not fetch emails in between inbox_watch disabled and enabled again #2087

- fix: do not fetch from INBOX if inbox_watch is disabled #2085

- fix: do not use STARTTLS when PLAIN connection is requested
  and do not allow downgrade if STARTTLS is not available #2071


## 1.49.0

- add timestamps to image and video filenames #2068

- forbid quoting messages from another context #2069

- fix: preserve quotes in messages with attachments #2070


## 1.48.0

- `fetch_existing` renamed to `fetch_existing_msgs` and disabled by default
  #2035 #2042

- skip fetch existing messages/contacts if config-option `bot` set #2017

- always log why a message is sorted to trash #2045

- display a quote if top posting is detected #2047

- add ephemeral task cancellation to `dc_stop_io()`;
  before, there was no way to quickly terminate pending ephemeral tasks #2051

- when saved-messages chat is deleted,
  a device-message about recreation is added #2050

- use `max_smtp_rcpt_to` from provider-db,
  sending messages to many recipients in configurable chunks #2056

- fix handling of empty autoconfigure files #2027

- fix adding saved messages to wrong chats on multi-device #2034 #2039

- fix hang on android4.4 and other systems
  by adding a workaround to executer-blocking-handling bug #2040

- fix secret key export/import roundtrip #2048

- fix mistakenly unarchived chats #2057

- fix outdated-reminder test that fails only 7 days a year,
  including halloween :) #2059

- improve python bindings #2021 #2036 #2038

- update provider-database #2037


## 1.47.0

- breaking change: `dc_update_device_chats()` removed;
  this is now done automatically during configure
  unless the new config-option `bot` is set #1957

- breaking change: split `DC_EVENT_MSGS_NOTICED` off `DC_EVENT_MSGS_CHANGED`
  and remove `dc_marknoticed_all_chats()` #1942 #1981

- breaking change: remove unused starring options #1965

- breaking change: `DC_CHAT_TYPE_VERIFIED_GROUP` replaced by
  `dc_chat_is_protected()`; also single-chats may be protected now, this may
  happen over the wire even if the UI do not offer an option for that #1968

- breaking change: split quotes off message text,
  UIs should use at least `dc_msg_get_quoted_text()` to show quotes now #1975

- new api for quote handling: `dc_msg_set_quote()`, `dc_msg_get_quoted_text()`,
  `dc_msg_get_quoted_msg()` #1975 #1984 #1985 #1987 #1989 #2004

- require quorum to enable encryption #1946

- speed up and clean up account creation #1912 #1927 #1960 #1961

- configure now collects recent contacts and fetches last messages
  unless disabled by `fetch_existing` config-option #1913 #2003
  EDIT: `fetch_existing` renamed to `fetch_existing_msgs` in 1.48.0 #2042

- emit `DC_EVENT_CHAT_MODIFIED` on contact rename
  and set contact-id on `DC_EVENT_CONTACTS_CHANGED` #1935 #1936 #1937

- add `dc_set_chat_protection()`; the `protect` parameter in
  `dc_create_group_chat()` will be removed in an upcoming release;
  up to then, UIs using the "verified group" paradigm
  should not use `dc_set_chat_protection()` #1968 #2014 #2001 #2012 #2007

- remove unneeded `DC_STR_COUNT` #1991

- mark all failed messages as failed when receiving an NDN #1993

- check some easy cases for bad system clock and outdated app #1901

- fix import temporary directory usage #1929

- fix forcing encryption for reset peers #1998

- fix: do not allow to save drafts in non-writeable chats #1997

- fix: do not show HTML if there is no content and there is an attachment #1988

- fix recovering offline/lost connections, fixes background receive bug #1983

- fix ordering of accounts returned by `dc_accounts_get_all()` #1909

- fix whitespace for summaries #1938

- fix: improve sentbox name guessing #1941

- fix: avoid manual poll impl for accounts events #1944

- fix encoding newlines in param as a preparation for storing quotes #1945

- fix: internal and ffi error handling #1967 #1966 #1959 #1911 #1916 #1917 #1915

- fix ci #1928 #1931 #1932 #1933 #1934 #1943

- update provider-database #1940 #2005 #2006

- update dependencies #1919 #1908 #1950 #1963 #1996 #2010 #2013


## 1.46.0

- breaking change: `dc_configure()` report errors in
  `DC_EVENT_CONFIGURE_PROGRESS`: capturing error events is no longer working
  #1886 #1905

- breaking change: removed `DC_LP_{IMAP|SMTP}_SOCKET*` from `server_flags`;
  added `mail_security` and `send_security` using `DC_SOCKET` enum #1835

- parse multiple servers in Mozilla autoconfig #1860

- try multiple servers for each protocol #1871

- do IMAP and SMTP configuration in parallel #1891

- configuration cleanup and speedup #1858 #1875 #1889 #1904 #1906

- secure-join cleanup, testing, fixing #1876 #1877 #1887 #1888 #1896 #1899 #1900

- do not reset peerstate on encrypted messages,
  ignore reordered autocrypt headers #1885 #1890

- always sort message replies after parent message #1852

- add an index to significantly speed up `get_fresh_msg_cnt()` #1881

- improve mimetype guessing for PDF and many other formats #1857 #1861

- improve accepting invalid html #1851

- improve tests, cleanup and ci #1850 #1856 #1859 #1861 #1884 #1894 #1895

- tweak HELO command #1908

- make `dc_accounts_get_all()` return accounts sorted #1909

- fix KML coordinates precision used for location streaming #1872

- fix cancelling import/export #1855


## 1.45.0

- add `dc_accounts_t` account manager object and related api functions #1784

- add capability to import backups as .tar files,
  which will become the default in a subsequent release #1749

- try various server domains on configuration #1780 #1838

- recognize .tgs files as stickers #1826

- remove X-Mailer debug header #1819

- improve guessing message types from extension #1818

- fix showing unprotected subjects in encrypted messages #1822

- fix threading in interaction with non-delta-clients #1843

- fix handling if encryption degrades #1829

- fix webrtc-servers names set by the user #1831

- update provider database #1828

- update async-imap to fix Oauth2 #1837

- optimize jpeg assets with trimage #1840

- add tests and documentations #1809 #1820


## 1.44.0

- fix peerstate issues #1800 #1805

- fix a crash related to muted chats #1803

- fix incorrect dimensions sometimes reported for images #1806

- fixed `dc_chat_get_remaining_mute_duration` function #1807

- handle empty tags (e.g. `<br/>`) in HTML mails #1810

- always translate the message about disappearing messages timer change #1813

- improve footer detection in plain text email #1812

- update device chat icon to fix warnings in iOS logs #1802

- fix deletion of multiple messages #1795


## 1.43.0

- improve using own jitsi-servers #1785

- fix smtp-timeout tweaks for larger mails #1797

- more bug fixes and updates #1794 #1792 #1789 #1787


## 1.42.0

- new qr-code type `DC_QR_WEBRTC` #1779

- new `dc_chatlist_get_summary2()` api #1771

- tweak smtp-timeout for larger mails #1782

- optimize read-receipts #1765

- Allow http scheme for DCACCOUNT URLs #1770

- improve tests #1769

- bug fixes #1766 #1772 #1773 #1775 #1776 #1777


## 1.41.0

- new apis to initiate video chats #1718 #1735

- new apis `dc_msg_get_ephemeral_timer()`
  and `dc_msg_get_ephemeral_timestamp()`

- new api `dc_chatlist_get_summary2()` #1771

- improve IMAP handling #1703 #1704

- improve ephemeral messages #1696 #1705

- mark location-messages as auto-generated #1715

- multi-device avatar-sync #1716 #1717

- improve python bindings #1732 #1733 #1738 #1769

- Allow http scheme for DCACCOUNT urls #1770

- more fixes #1702 #1706 #1707 #1710 #1719 #1721
  #1723 #1734 #1740 #1744 #1748 #1760 #1766 #1773 #1765

- refactorings #1712 #1714 #1757

- update toolchains and dependencies #1726 #1736 #1737 #1742 #1743 #1746


## 1.40.0

- introduce ephemeral messages #1540 #1680 #1683 #1684 #1691 #1692

- `DC_MSG_ID_DAYMARKER` gets timestamp attached #1677 #1685

- improve idle #1690 #1688

- fix message processing issues by sequential processing #1694

- refactorings #1670 #1673


## 1.39.0

- fix handling of `mvbox_watch`, `sentbox_watch`, `inbox_watch` #1654 #1658

- fix potential panics, update dependencies #1650 #1655


## 1.38.0

- fix sorting, esp. for multi-device


## 1.37.0

- improve ndn heuristics #1630

- get oauth2 authorizer from provider-db #1641

- removed linebreaks and spaces from generated qr-code #1631

- more fixes #1633 #1635 #1636 #1637


## 1.36.0

- parse ndn (network delivery notification) reports
  and report failed messages as such #1552 #1622 #1630

- add oauth2 support for gsuite domains #1626

- read image orientation from exif before recoding #1619

- improve logging #1593 #1598

- improve python and bot bindings #1583 #1609

- improve imap logout #1595

- fix sorting #1600 #1604

- fix qr code generation #1631

- update rustcrypto releases #1603

- refactorings #1617


## 1.35.0

- enable strict-tls from a new provider-db setting #1587

- new subject 'Message from USER' for one-to-one chats #1395

- recode images #1563

- improve reconnect handling #1549 #1580

- improve importing addresses #1544

- improve configure and folder detection #1539 #1548

- improve test suite #1559 #1564 #1580 #1581 #1582 #1584 #1588:

- fix ad-hoc groups #1566

- preventions against being marked as spam #1575

- refactorings #1542 #1569


## 1.34.0

- new api for io, thread and event handling #1356,
  see the example atop of `deltachat.h` to get an overview

- LOTS of speed improvements due to async processing #1356

- enable WAL mode for sqlite #1492

- process incoming messages in bulk #1527

- improve finding out the sent-folder #1488

- several bug fixes


## 1.33.0

- let `dc_set_muted()` also mute one-to-one chats #1470

- fix a bug that led to load and traffic if the server does not use sent-folder
  #1472


## 1.32.0

- fix endless loop when trying to download messages with bad RFC Message-ID,
  also be more reliable on similar errors #1463 #1466 #1462

- fix bug with comma in contact request #1438

- do not refer to hidden messages on replies #1459

- improve error handling #1468 #1465 #1464


## 1.31.0

- always describe the context of the displayed error #1451

- do not emit `DC_EVENT_ERROR` when message sending fails;
  `dc_msg_get_state()` and `dc_get_msg_info()` are sufficient #1451

- new config-option `media_quality` #1449

- try over if writing message to database fails #1447


## 1.30.0

- expunge deleted messages #1440

- do not send `DC_EVENT_MSGS_CHANGED|INCOMING_MSG` on hidden messages #1439


## 1.29.0

- new config options `delete_device_after` and `delete_server_after`,
  each taking an amount of seconds after which messages
  are deleted from the device and/or the server #1310 #1335 #1411 #1417 #1423

- new api `dc_estimate_deletion_cnt()` to estimate the effect
  of `delete_device_after` and `delete_server_after`

- use Ed25519 keys by default, these keys are much shorter
  than RSA keys, which results in saving traffic and speed improvements #1362

- improve message ellipsizing #1397 #1430

- emit `DC_EVENT_ERROR_NETWORK` also on smtp-errors #1378

- do not show badly formatted non-delta-messages as empty #1384

- try over SMTP on potentially recoverable error 5.5.0 #1379

- remove device-chat from forward-to-chat-list #1367

- improve group-handling #1368

- `dc_get_info()` returns uptime (how long the context is in use)

- python improvements and adaptions #1408 #1415

- log to the stdout and stderr in tests #1416

- refactoring, code improvements #1363 #1365 #1366 #1370 #1375 #1389 #1390 #1418 #1419

- removed api: `dc_chat_get_subtitle()`, `dc_get_version_str()`, `dc_array_add_id()`

- removed events: `DC_EVENT_MEMBER_ADDED`, `DC_EVENT_MEMBER_REMOVED`


## 1.28.0

- new flag DC_GCL_FOR_FORWARDING for dc_get_chatlist()
  that will sort the "saved messages" chat to the top of the chatlist #1336
- mark mails as being deleted from server in dc_empty_server() #1333
- fix interaction with servers that do not allow folder creation on root-level;
  use path separator as defined by the email server #1359
- fix group creation if group was created by non-delta clients #1357
- fix showing replies from non-delta clients #1353
- fix member list on rejoining left groups #1343
- fix crash when using empty groups #1354
- fix potential crash on special names #1350


## 1.27.0

- handle keys reliably on armv7 #1327


## 1.26.0

- change generated key type back to RSA as shipped versions
  have problems to encrypt to Ed25519 keys

- update rPGP to encrypt reliably to Ed25519 keys;
  one of the next versions can finally use Ed25519 keys then


## 1.25.0

- save traffic by downloading only messages that are really displayed #1236

- change generated key type to Ed25519, these keys are much shorter
  than RSA keys, which results in saving traffic and speed improvements #1287

- improve key handling #1237 #1240 #1242 #1247

- mute handling, apis are dc_set_chat_mute_duration()
  dc_chat_is_muted() and dc_chat_get_remaining_mute_duration() #1143

- pinning chats, new apis are dc_set_chat_visibility() and
  dc_chat_get_visibility() #1248

- add dc_provider_new_from_email() api that queries the new, integrated
  provider-database #1207

- account creation by scanning a qr code
  in the DCACCOUNT scheme (https://mailadm.readthedocs.io),
  new api is dc_set_config_from_qr() #1249

- if possible, dc_join_securejoin(), returns the new chat-id immediately
  and does the handshake in background #1225

- update imap and smtp dependencies #1115

- check for MOVE capability before using MOVE command #1263

- allow inline attachments from RFC 2183 #1280

- fix updating names from incoming mails #1298

- fix error messages shown on import #1234

- directly attempt to re-connect if the smtp connection is maybe stale #1296

- improve adding group members #1291

- improve rust-api #1261

- cleanup #1302 #1283 #1282 #1276 #1270-#1274 #1267 #1258-#1260
  #1257 #1239 #1231 #1224

- update spec #1286 #1291


## 1.0.0-beta.24

- fix oauth2/gmail bug introduced in beta23 (not used in releases) #1219

- fix panic when receiving eg. cyrillic filenames #1216

- delete all consumed secure-join handshake messagess #1209 #1212

- rust-level cleanups #1218 #1217 #1210 #1205

- python-level cleanups #1204 #1202 #1201


## 1.0.0-beta.23

- #1197 fix imap-deletion of messages 

- #1171 Combine multiple MDNs into a single mail, reducing traffic 

- #1155 fix to not send out gossip always, reducing traffic

- #1160 fix reply-to-encrypted determination 

- #1182 Add "Auto-Submitted: auto-replied" header to MDNs

- #1194 produce python wheels again, fix c/py.delta.chat
  master-deployment 

- rust-level housekeeping and improvements #1161 #1186 #1185 #1190 #1194 #1199 #1191 #1190 #1184 and more

- #1063 clarify licensing 

- #1147 use mailparse 0.10.2 


## 1.0.0-beta.22

- #1095 normalize email lineends to CRLF

- #1095 enable link-time-optimization, saves eg. on android 11 mb

- #1099 fix import regarding devicechats

- #1092 improve logging

- #1096 #1097 #1094 #1090 #1091 internal cleanups

## 1.0.0-beta.21

- #1078 #1082 ensure RFC compliance by producing 78 column lines for
  encoded attachments. 

- #1080 don't recreate and thus break group membership if an unknown 
  sender (or mailer-daemon) sends a message referencing the group chat 

- #1081 #1079 some internal cleanups 

- update imap-proto dependency, to fix yandex/oauth 

## 1.0.0-beta.20

- #1074 fix OAUTH2/gmail
- #1072 fix group members not appearing in contact list
- #1071 never block interrupt_idle (thus hopefully also not on maybe_network())
- #1069 reduce smtp-timeout to 30 seconds
- #1066 #1065 avoid unwrap in dehtml, make literals more readable

## 1.0.0-beta.19

- #1058 timeout smtp-send if it doesn't complete in 15 minutes 

- #1059 trim down logging

## 1.0.0-beta.18

- #1056 avoid panicking when we couldn't read imap-server's greeting
  message 

- #1055 avoid panicking when we don't have a selected folder

- #1052 #1049 #1051 improve logging to add thread-id/name and
  file/lineno to each info/warn message.

- #1050 allow python bindings to initialize Account with "os_name".


## 1.0.0-beta.17

- #1044 implement avatar recoding to 192x192 in core to keep file sizes small. 

- #1024 fix #1021 SQL/injection malformed Chat-Group-Name breakage

- #1036 fix smtp crash by pulling in a fixed async-smtp 

- #1039 fix read-receipts appearing as normal messages when you change
  MDN settings 

- #1040 do not panic on SystemTimeDifference

- #1043 avoid potential crashes in malformed From/Chat-Disposition... headers  

- #1045 #1041 #1038 #1035 #1034 #1029 #1025 various cleanups and doc
  improvments 

## 1.0.0-beta.16

- alleviate login problems with providers which only
  support RSA1024 keys by switching back from Rustls 
  to native-tls, by using the new async-email/async-native-tls 
  crate from @dignifiedquire. thanks @link2xt. 

- introduce per-contact profile images to send out 
  own profile image heuristically, and fix sending
  out of profile images in "in-prepare" groups. 
  this also extends the Chat-spec that is maintained
  in core to specify Chat-Group-Image and Chat-Group-Avatar
  headers. thanks @r10s and @hpk42.

- fix merging of protected headers from the encrypted
  to the unencrypted parts, now not happening recursively
  anymore.  thanks @hpk and @r10s

- fix/optimize autocrypt gossip headers to only get 
  sent when there are more than 2 people in a chat. 
  thanks @link2xt

- fix displayname to use the authenticated name 
  when available (displayname as coming from contacts 
  themselves). thanks @simon-laux

- introduce preliminary support for offline autoconfig 
  for nauta provider. thanks @hpk42 @r10s

## 1.0.0-beta.15

- fix #994 attachment appeared doubled in chats (and where actually
  downloaded after smtp-send). @hpk42

## 1.0.0-beta.14

- fix packaging issue with our rust-email fork, now we are tracking
  master again there. hpk42

## 1.0.0-beta.13

- fix #976 -- unicode-issues in display-name of email addresses. @hpk42

- fix #985 group add/remove member bugs resulting in broken groups.  @hpk42

- fix hanging IMAP connections -- we now detect with a 15second timeout
  if we cannot terminate the IDLE IMAP protocol. @hpk42 @link2xt

- fix incoming multipart/mixed containing html, to show up as
  attachments again.  Fixes usage for simplebot which sends html
  files for users to interact with the bot. @adbenitez @hpk42 

- refinements to internal autocrypt-handling code, do not send
  prefer-encrypt=nopreference as it is the default if no attribute
  is present.  @linkxt 

- simplify, modularize and rustify several parts 
  of dc-core (general WIP). @link2xt @flub @hpk42 @r10s

- use async-email/async-smtp to handle SMTP connections, might
  fix connection/reconnection issues. @link2xt 

- more tests and refinements for dealing with blobstorage @flub @hpk42 

- use a dedicated build-server for CI testing of core PRs


## 1.0.0-beta.12

- fix python bindings to use core for copying attachments to blobdir
  and fix core to actually do it. @hpk42

## 1.0.0-beta.11

- trigger reconnect more often on imap error states.  Should fix an 
  issue observed when trying to empty a folder.  @hpk42

- un-split qr tests: we fixed qr-securejoin protocol flakyness 
  last weeks. @hpk42

## 1.0.0-beta.10

- fix grpid-determination from in-reply-to and references headers. @hpk42

- only send Autocrypt-gossip headers on encrypted messages. @dignifiedquire

- fix reply-to-encrypted message to also be encrypted. @hpk42

- remove last unsafe code from dc_receive_imf :) @hpk42

- add experimental new dc_chat_get_info_json FFI/API so that desktop devs
  can play with using it. @jikstra

- fix encoding of subjects and attachment-filenames @hpk42
  @dignifiedquire . 

## 1.0.0-beta.9

- historic: we now use the mailparse crate and lettre-email to generate mime
  messages.  This got rid of mmime completely, the C2rust generated port of the libetpan 
  mime-parse -- IOW 22KLocs of cumbersome code removed! see 
  https://github.com/deltachat/deltachat-core-rust/pull/904#issuecomment-561163330
  many thanks @dignifiedquire for making everybody's life easier 
  and @jonhoo (from rust-imap fame) for suggesting to use the mailparse crate :) 

- lots of improvements and better error handling in many rust modules 
  thanks @link2xt @flub @r10s, @hpk42 and @dignifiedquire 

- @r10s introduced a new device chat which has an initial
  welcome message.  See 
  https://c.delta.chat/classdc__context__t.html#a1a2aad98bd23c1d21ee42374e241f389
  for the main new FFI-API.

- fix moving self-sent messages, thanks @r10s, @flub, @hpk42

- fix flakyness/sometimes-failing verified/join-protocols, 
  thanks @flub, @r10s, @hpk42

- fix reply-to-encrypted message to keep encryption 

- new DC_EVENT_SECUREJOIN_MEMBER_ADDED event 

- many little fixes and rustifications (@link2xt, @flub, @hpk42)


## 1.0.0-beta.8

- now uses async-email/async-imap as the new base 
  which makes imap-idle interruptible and thus fixes
  several issues around the imap thread being in zombie state . 
  thanks @dignifiedquire, @hpk42 and @link2xt. 

- fixes imap-protocol parsing bugs that lead to infinitely
  repeated crashing while trying to receive messages with
  a subjec that contained non-utf8. thanks @link2xt

- fixed logic to find encryption subkey -- previously 
  delta chat would use the primary key for encryption
  (which works with RSA but not ECC). thanks @link2xt

- introduce a new device chat where core and UIs can 
  add "device" messages.  Android uses it for an initial
  welcome message. thanks @r10s

- fix time smearing (when two message are virtually send
  in the same second, there would be misbehaviour because
  we didn't persist smeared time). thanks @r10s

- fix double-dotted extensions like .html.zip or .tar.gz  
  to not mangle them when creating blobfiles.  thanks @flub

- fix backup/exports where the wrong sql file would be modified,
  leading to problems when exporting twice.  thanks @hpk42

- several other little fixes and improvements 


## 1.0.0-beta.7

- fix location-streaming #782

- fix display of messages that could not be decrypted #785
 
- fix smtp MAILER-DAEMON bug #786 

- fix a logging of durations #783

- add more error logging #779

- do not panic on some bad utf-8 mime #776

## 1.0.0-beta.6

- fix chatlist.get_msg_id to return id, instead of wrongly erroring

## 1.0.0-beta.5

- fix dc_get_msg() to return empty messages when asked for special ones 

## 1.0.0-beta.4

- fix more than one sending of autocrypt setup message

- fix recognition of mailto-address-qr-codes, add tests

- tune down error to warning when adding self to chat

## 1.0.0-beta.3

- add back `dc_empty_server()` #682

- if `show_emails` is set to `DC_SHOW_EMAILS_ALL`,
  email-based contact requests are added to the chatlist directly

- fix IMAP hangs #717 and cleanups

- several rPGP fixes

- code streamlining and rustifications


## 1.0.0-beta.2

- https://c.delta.chat docs are now regenerated again through our CI 

- several rPGP cleanups, security fixes and better multi-platform support 

- reconnect on io errors and broken pipes (imap)

- probe SMTP with real connection not just setup

- various imap/smtp related fixes

- use to_string_lossy in most places instead of relying on valid utf-8
  encodings
 
- rework, rustify and test autoconfig-reading and parsing 

- some rustifications/boolifications of c-ints 


## 1.0.0-beta.1 

- first beta of the Delta Chat Rust core library. many fixes of crashes
  and other issues compared to 1.0.0-alpha.5.

- Most code is now "rustified" and does not do manual memory allocation anymore. 

- The `DC_EVENT_GET_STRING` event is not used anymore, removing the last
  event where the core requested a return value from the event callback. 

  Please now use `dc_set_stock_translation()` API for core messages
  to be properly localized. 

- Deltachat FFI docs are automatically generated and available here: 
  https://c.delta.chat 

- New events ImapMessageMoved and ImapMessageDeleted

For a full list of changes, please see our closed Pull Requests: 

https://github.com/deltachat/deltachat-core-rust/pulls?q=is%3Apr+is%3Aclosed