Release 1.16.0

• (Chrome, Edge) Enabled Manifest Version 3.
• (Firefox, Thunderbird) Enabled non-persistent event pages.
• (Chrome, Edge) Made the options page show up in a new tab.
• (Safari) Fixed some bugs with the background page waking up.
• Lookup fixes
  • Fixed recognition of words that end in half-width numerals like 小1.
  • Added parsing for ill-formed numbers like 39,800万円.
  • (Firefox) Fixed lookup misbehaving on Firefox with <textarea>s with display: block such as on pastebin.com (#1403).
  • Made matches on search-only headwords show the search-only version too (e.g. 磨ガラス, ペイチン) (#1361).
  • Hid the "usually kana" annotation when no kanji headwords are shown (also #1361).
  • Added ability to recognize (deinflect) a few more irregular verbs like ございません and くださいます (#1431).
• Keyboard fixes
  • Added handling to avoid the x key being assigned to both closing the popup and expanding it.
  • (Firefox, Thunderbird) Fixed the toggle key setting to allow using ,, ., Home, End, PageUp, PageDown, Space, Insert, Delete, Up, Down, Left, and Right.
  • (Firefox, Thunderbird) Made it possible to clear the toggle key.
• Other bug fixes
  • (Firefox) Added a workaround for a Firefox bug that would cause 10ten to hang when changing dictionary language.
  • Fixed the popup changing width in some cases (e.g. when tabs are hidden and scrollbars are configured to always show) (#1314).
• (Firefox) Android fixes
  • Made the lookup puck handle taps and double-taps correctly on Firefox for Android.
  • Hid settings button in popup on Firefox for Android until bug 1795449 is fixed.