updated changelog for v0.7.0b4, updated aw-watcher-web

updated aw-qt submodule with critical bugfix

updated submodules in preparation for v0.7.0b2

Merge pull request #67 from ActivityWatch/dev/server-next

Major server refactoring

Merge pull request #55 from ActivityWatch/dev/better-artifact-naming

Better artifact naming

disabled integration tests on Appveyor due to stall

updated submodules with a bunch of changes to fix pyinstaller stuff a…

…nd more

updated aw-watcher-afk with pyinstaller fix

updated aw-core submodule which contained a bug (underspecified packa…

…ges)

Merge pull request #49 from ActivityWatch/dev/script-restructure

Dev/script restructure