v4.5.1-ose

What's Changed

New features

• Improve IME integration on forms by @ArnyminerZ in #1504
• [Google] Remove warning box on login screen by @sunkup in #1548

Bug fixes

• Update sync progress bar when pending in SAF by @sunkup in #1445
• OAuth: Synchronize access token generation by @rfc2822 in #1547

Refactoring

• Update synctools and use unified BatchOperation by @rfc2822 in #1543
• Don't subclass AndroidEvent / AndroidCalendar populate / build methods anymore by @rfc2822 in #1544
• Set iCalendar PRODID in Constants and use it in respective classes by @rfc2822 in #1550
• LocalEvent: don't subclass AndroidEvent by @rfc2822 in #1551
• LocalCalendar: don't subclass AndroidCalendar by @rfc2822 in #1552
• Update to synctools version that uses explicit parsing / splitting by @rfc2822 in #1554

Other changes

• Update README.md after switch to synctools by @mbiebl in #1549

Full Changelog: v4.5-ose...v4.5.1-ose