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 & standards polish

• Update the test UI by showing progress in the title bar.
• Fix hterm.terminal.getCursorRow API.
• Add a user-css-text preference for injecting custom CSS directly.
• Update ocs52.sh helper to POSIX shell.
• Convert to standard 'wheel' event and drop support for non-standard 'mousewheel' and 'DOMMouseScroll' events. This also brings support for line & page scrolling in addition to existing pixel based.
• Add support for scrolling via touch. Only scrolling is supported currently.
• Improve standards conformance by ignoring leading zeros in CSI commands.
• Add support for xterm beam cursor control (CSI+ q 5 & 6).
• Add support for xterm fg/bg color control (OSC+10 & OSC+11).
• Add support for rxvt scrollbar toggle (DECSET/DECRST 30).
• Simplify handling of FF/HPA/NUL (should only be an internal cleanup).
• Fix typos in DECIC & DECDC CSI sequences.
• Add support for HPR (Character Position Relative).

Test improvements, and a few fixes/features

• Fix hterm_all.js to include all of hterm source files.
• Add support for blinking text via CSS animations.
• Improve test UI to include results in the HTML output.
• Fix handling of the alt key across alt+tab window switches (for alt-backspace-is-meta-backspace preference).

A little polish

• On ctrl-click, if a URL is selected, launch a new tab with the URL.
• Update test lists to match all the existing ones.
• Polish documentation/comments.
• Fix missing last line with some fonts/zoom levels.
• Allow keyboard shortcuts to be more easily bound by users.

Full bake

• Fix horizontal cursor tracking broken by the misrendering fix.

A little polish

• Fix hexToRGB parsing of more formats.
• Fix misrendering of last line with some resolutions.
• Update window.postMessage API to work with Chrome M54+.

copySelectionToClipboard fixes

• In hterm_terminal.js, use Terminal.prototype.copySelectionToClipboard, rather than the raw hterm.copySelectionToClipboard.

A little polish

• Fix race on IE with scrollport initialization.
• Fix ctrl-shift-esc handling on OS X.
• Always use the text cursor in the terminal.
• Fix 8-bit help text in options page.
• Allow zoom warning to be dismissed.

pref shuffle, keybindings, utf-8, and Mouse reporting

• Fix mouse reporting. Previously users had to click, then move the mouse before mouse reporting would start.
• Deal with surrogate pairs more properly.
• Add customizable keybindings.
• hterm_preference_manager.js: Group prefs into categories, declare input types rather than guess based on default value, improve layout.