Merge branch 'release/v3.2.0'

Merge branch 'release/v3.2.0'

* release/v3.2.0: (22 commits)
  3.2.0
  Update Swedish translation
  Update automatic translations
  Add missing translations to base
  Remove old strings in Swedish translation
  Hide information in the options page when not using Chrome
  Always remove all context menus onInstall
  Don't listen to tab events when not speaking
  Shallow copy objects before passing in references to create context menu
  Attempting fix for dead objects when closing options popup in firefox during speech
  Fix rollup.js warnings for cleanup's sourcemap handling by ensuring each file has the correct/formatted copyright notice
  Strip out repeated/per-file copyright comments when building
  Prepend a copyright/dependency banner
  Don't run eslint on compiled code
  Reduce png image sizes
  Don't use markdown wrapped in html tags
  Update automatic translations
  Work around linting for not yet implemented browser.permissions
  Add premium feature to read text from the clipboard
  Clone to avoid parallelism problems with referenced objects
  ...