v2.0 released

a full year with qtemail my only email client on desktop+phone

Changelog:

• Modularization, huge refactor, performance improvements
• Large toolbar improvments (added submenu, style, same for all platforms)
• Add --delete and --move support to email.pl
• New file selector UI using qmlcompletionbox (for attachments)
• Add support for CC and BCC in email.pl and GUI
• Add count_include config to optionally ignore folders for unread counts
• Fix bug: changing folder did not navigate back to header list
• Fix bug: mark-all-read updated UI even if you changed folders
• Fix bug: email addresses containing dots failed to parse in send GUI
• Improve cmdline args (e.g.: `email-gui.py --account=WORK --page=send`)
• Improve config: add descriptions+usage, support multi-line, set-password
• Workaround for font point size warnings caused by QT4 bug