Standards improvements

• Drop old String.prototype.codePointAt polyfill.
• Drop lib.f.{l,r}pad in favor of String.pad{Start,End}.
  API breakage warning: Users of these funcs will need to update to use the
  new funcs, and include the new libdot polyfill library.

New features & charater map improvements

• Fix wide char width handling and simplify in general via CSS vars.
• Use ES6 String.repeat to simplify char size measurements.
• Force height of all lines/chars to match to avoid glyphs drawing lines too
  high or low and making rendering overall inconsistent.
• Fix mouse move reporting (regression in hterm-1.65).
• Clarify modifiers in keyboard bindings.
• Invert touchscreen scrolling to match OS direction.
• Document hterm JS language (browser/runtime) requirements.
• Drop support for GR character maps (which have never actually worked).
• Add tests for hterm.VT.CharacterMap code.
• Clean up the hterm.VT.CharacterMap classes.
• Add reset & setOverrides helpers to hterm.VT.CharacterMap for customization.
• Add a new hterm.VT.CharacterMaps container class.
  API breakage warning: hterm.VT.CharacterMap.maps no longer exists. Any users
  of it will need to instantiate hterm.VT.CharacterMaps and use that API.
• Change mouse wheel scrolling when DECCKM is active to run only on the alt
  screen (and never the primary screen).
• Add support for custom notifications (iTerm2's OSC-9 and URxvt's
  OSC-777:notify module).
• Initial support for making virtual keyboards show up (for phones/tablets).
• Fix clicking of mailto: links.
• Fix ctrl+clicking in empty space (caused internal errors).
• Change Ctrl+V and Ctrl+Shift+V to invoke pasting directly instead of relying
  on the OS/browser to do so (makes macOS consistent).
• Include a terminal icon in all notifications.

New OpenSSL & UX improvements

• Update to libdot 1.14. Some standards fixes.
• Update to hterm 1.65. Lots of keyboard/mouse fixes/improvements.
• Add a console.log to point term_ hackers to the options page.
• More internal SFTP API improvements.
• Delay display of connection dialog until it's finished loading.
• Add more FAQs about font ligatures & keyboard bindings.
• Autopopulate --config=google for Google corporate domains.
• Fix rendering of mount path in the connection dialog.
• Improve options page terminal preview to handle paste events.
• Fix ServerAliveInterval handling (and perhaps other configs).
• Upgrade mdocml (used to generate ssh man pages).
• Upgrade OpenSSL to 1.0.2k.

Standards cleanup

• Add a lib.f.createEnum helper (largely for linting purposes).
• Move from non-standard proto to standard Object.create/prototype.

New features & standards polish

• Use new lib.f.createEnum helper.
• Move from non-standard -webkit-flex CSS to standard flex names.
• Delay display of iframe dialog until it's finished loading.
  API breakage warning: Your app needs to transmit a terminal-info-ok message
  back after it has received & finished processing the terminal-info message.
• Fix CrOS OS detection with middle mouse pasting.
• Make word break selections into a user preference.
• Move from non-standard proto to standard Object.create/prototype.
• Add a sep option for pasting on mouse right click events.
• Move from non-standard MouseEvent.which to standard MouseEvent.button.
  API breakage warning: The mouse-paste-button option needs to be updated if
  it has been changed from the "auto" setting.
• Document keyboard bindings API & user settings.
• Make keyboard binding parsing more robust to bad inputs.
• Make keyboard bindings more flexible (mixed case and more button aliases).
• Change the mouse cursor based on mouse reporting mode (cursor<->text bar).
• Support mouse wheel scrolling when DECCKM is active by emitting up/down arrow
  key presses automatically.

IDN & UX improvements

• Update to libdot 1.13. Brings in punycode (for IDN) support.
• Update to hterm 1.64. Adds shift+arrow key scrolling.
• Start documenting tribal knowledge^W^W our release processes.
• Highlight invalid fields in the connection manager better.
• Pretty format JSON objects in the options page.
• Support completely arbitrary usernames (spaces, dashes, etc...).
• Expand our Chrome whitelisted features document.
• Add basic hostname checking to the connection manager.
• Add IDN support (to connect to international hostnames using Unicode).
• Lots of internal SFTP API cleanups & improvements.
• Set the title (tooltip) text of input fields in the connection manager.
• Improve accessibility labels in the connection manager.
• Catch NaCl plugin crashes in more places.
• Support showing release highlights in the initial terminal.
• Add an option for changing the base path with SFTP mounts in Chrome OS.
• Upgrade zlib to 1.2.11.

IDN support

• Relocate wcwidth module to third_party/ to follow Google practices.
• Integrate punycode.js for IDN support.
• Add MessageManager tests!
• Allow i18n attributes to re-use themselves.
• Use ES6 String.repeat & startsWith & endsWith helpers.
• Add a lib.f.rpad helper for right padding strings.

Arrow key scroll

• Start documenting all supported control sequences.
• Shift+up/down arrow keys now scroll the terminal by one line.
• Disable the "window header" bar since it's been empty for a while.

new features for users

• Update to libdot 1.12. Fixes preference syncing between open windows.
• Update to hterm 1.63. Lots of little new features.
• Log the actual relay we're connecting through.
• Increase the field size in the options page for easier editing.
• Add a user-css-text field for injecting custom CSS directly.
  Simplifies use of webfonts.
• Ignore custom ssh commands when creating a SFTP mount.

Window pref sharing fix

• Fix notification of other windows when preferences are reset.
• Allow mkzip to do channel & version promotion independently.
• Update the test UI by showing progress in the title bar.