[ANNOUNCE] OfflineIMAP v7.0.0-rc1 released

[Nicolas Sebrecht]

OfflineIMAP v7.0.0-rc1 is out.

Downloads:
  http://github.com/OfflineIMAP/offlineimap/archive/v7.0.0-rc1.tar.gz
  http://github.com/OfflineIMAP/offlineimap/archive/v7.0.0-rc1.zip

Pip:
  pip install --user git+https://github.com/OfflineIMAP/offlineimap.git@v7.0.0-rc1


We are starting a new major release cycle.

The dabatase for the cache is now sqlite by default. This means downgrading to
previous versions is prone to errors if you don't have sqlite enabled in your
configuration. All users should enable the sqlite database now to avoid issues.
Expect the legacy text files to be deprecated and removed in the future.

The long time awaited feature to not delete any message while allowing adding
new messages and sync flags is now implemented and marked stable. Thanks to the
testers and your feedbacks!

Łukasz started the work to support Python 3. Because of this, the six dependency
is required.

If you have scripts using the pid file, be aware this file is no longer used
because running multiple instances of the program is supported for years.

There a lot of code factorization and documentation improvements, especially
around threads.

I'm happy new contributors joined the official team, especially Łukasz and Ilias
(Debian maintainer). Thank you!

# Authors

- Nicolas Sebrecht (32)
- Łukasz Żarnowiecki (17)
- Dodji Seketeli (1)
- Om Prakash (1)

# Features

- Make sqlite status cache the default. [Nicolas Sebrecht]
- Learn to not delete messages. [Nicolas Sebrecht]
- Inform when maxage/startdate is in the future. [Łukasz Żarnowiecki]
- offlineimap.conf: XOAUTH2: expose and document the oauth2_request_url option. [Nicolas Sebrecht]
- offlineimap.conf: improve documentation for oauth2. [Nicolas Sebrecht]

# Fixes

- sqlite: open database when we use it rather than at instantiation time. [Nicolas Sebrecht]
- SQLite: close db when done. [Nicolas Sebrecht]
- conf: newmail_hook is a remote option. [Nicolas Sebrecht]
- folder: utime_from_header is for Maildir only. [Nicolas Sebrecht]
- Handle maxage for davmail correctly. [Łukasz Żarnowiecki]
- XOAUTH2: don't force oauth2_request_url to be defined. [Nicolas Sebrecht]
- XOAUTH2: raise error when oauth_request_url is missing for IMAP type. [Nicolas Sebrecht]
- IMAP: don't try to create empty folders. [Nicolas Sebrecht]
- Really execute the recipe of the 'docs' target in top-most Makefile. [Dodji Seketeli]

# Changes

- release.sh: make no differences between contributors. [Nicolas Sebrecht]
- threading: fix variable names about namespaces. [Nicolas Sebrecht]
- imapserver: use boolean where it makes sense. [Nicolas Sebrecht]
- threading: suggeststhreads must honor CLI and conf options. [Nicolas Sebrecht]
- threading: improve variable names and factorize code. [Nicolas Sebrecht]
- py3: raise exceptions using six module. [Łukasz Żarnowiecki]
- threading: minor improvements. [Nicolas Sebrecht]
- instancelimitedsems does not need a lock but must be used with global. [Nicolas Sebrecht]
- threading: get rid of the syncaccount function. [Nicolas Sebrecht]
- get rid of offlineimap/syncmaster.py. [Nicolas Sebrecht]
- threading: rename threadslist to accountThreads. [Nicolas Sebrecht]
- threading: simplify names. [Nicolas Sebrecht]
- Encode utf-8 argument for md5 function. [Łukasz Żarnowiecki]
- Replace dictionary iteration methods. [Łukasz Żarnowiecki]
- threading: simplify the monitoring code for threads. [Nicolas Sebrecht]
- threadutil: don't limit the number of threads. [Nicolas Sebrecht]
- threading: add comments. [Nicolas Sebrecht]
- Wrap zip calls with list call. [Łukasz Żarnowiecki]
- Remove xreadlines calls. [Łukasz Żarnowiecki]
- Replace xrange with range. [Łukasz Żarnowiecki]
- Replace has_key method to "key in dict". [Łukasz Żarnowiecki]
- Change filter with lambda to list comprehension. [Łukasz Żarnowiecki]
- Replace calls to long with int calls. [Łukasz Żarnowiecki]
- Add workaround for string.split for Python3. [Łukasz Żarnowiecki]
- Convert basestring to str. [Łukasz Żarnowiecki]
- Rename email.Parser to email.parser. [Łukasz Żarnowiecki]
- Do not mix tabs with spaces. [Łukasz Żarnowiecki]
- Convert except X,T to except X as T. [Łukasz Żarnowiecki]
- Add tags to gitignore. [Łukasz Żarnowiecki]
- don't write a pid file. [Nicolas Sebrecht]
- manual: improve rendering. [Nicolas Sebrecht]
- manual: improve sqlite section. [Nicolas Sebrecht]
- minor: logs: print readonly message in all debug modes. [Nicolas Sebrecht]
- accounts.py: minor improvements. [Nicolas Sebrecht]
- folder: properly factorize initialization and dropping of self.message. [Nicolas Sebrecht]
- offlineimap.txt: minor typo fixes. [Om Prakash]

-- 
Nicolas Sebrecht