Bumping version to 0.2.0
Add an undelimited rfc2822 style format for encrypte data (issue #697)
Make the internal mailbox cache both bounded and more stable
Downloading IMAP messages to WERVD works (issue #709)
Allow SELECT to work with mailbox names with spaces, more debugging (issue #709)
Fix CLI search results after _nice_subject change
Fix creation of mail/ folder
Reduce UI buffer size again, clean up locking code a bit
Making the mail source locking code much more fine-grained
Make sure save handler finishes work before quitting, misc quit fixes
Made locks debuggable, cleaned up locking code, fixed deadlock in config.py