v7.0-beta.128

Beta pre-release of upcoming v7.1:

Bug fix when importing session with existing filename (#679)
Font-weight changes (#743)
Added unit tests
Fix for blockhead favicons on startup (#719)
Partial promise/async/await refactor
Default instantly suspend to 'off'
Added suspend reason message
Added all options to context and shortcuts menus
Update db.js to v0.15.0
Refactored recovery and startup checks
Fix donation popup glitch
Refactored analytics to reduce traffic
Update html2canvas to v1.0.0-alpha.12
Added support for Russian language
Fix for "Suspend this tab now" (#735)
Improve handilng of discarded tabs during startup checks
Move "Discard after suspend" to options