Synchronization Improvements

Improvements for all users:

• We fixed a couple of issues where a temporary file and an updated/overwritten
  one (both typically generated by office suites) were mistakenly identified as
  a move/renaming.
• We also fixed a small offline/inline flashing status issue.

Improvements for Windows users:

• In case your synchronized directory is on a separate volume, the Windows
  recycle bin ($Recycle.Bin) folder is now properly ignored.

Improvements for contributors:

• yarn install now only installs npm dependencies: no more electron rebuild
  nor elm packages install. yarn install:all can be used instead for this.
• Continuous integration & publication are faster (more on Windows soon).

See also known issues.

Happy syncing!