FEATURE: Mouse button clicks can now be bound in keymaps by using
names like `"LeftClick"` or `"Ctrl-Alt-MiddleTripleClick"`. When bound
to a function, that function will be passed the position of the click
as second argument.

FEATURE: The behavior of mouse selection and dragging can now be
customized with the
[`configureMouse`](http://codemirror.net/doc/manual.html#option_configureMouse)
option.

To avoid false negatives due to window scrolling

Which often caused strangeness around empty lines

Issue #4307

Since rollup is now adding those

The identifier-quote that a language uses around identifiers can now
be defined using "identifierQuote" when defining a mimetype.
Previously, backticks where hardcoded, but this is not standard SQL
(which uses double quotes). For example, SQLite defines double quotes
as preferred way to quote identifiers:
http://sqlite.org/lang_keywords.html

Issue #4618

https://vi.stackexchange.com/questions/6061

1. End of wrapped line in bidi content is wrong (my mistake)
2. coordsChar({left:0, top: *}) in bidi content is wrong after Marijn's code
   style changes

ES5, breaking up of whitespace tokens

* Enable most in phantom
* Enable all in !phantom
* Disable two that trigger L1 which we don't do correctly currently
* Revert commit 5cc5d7f50efc7a016485f017a603c4fa2b035266 (L1 tests)

Should fix #1862 for ltr text.

Selecting two full lines including line ends makes a selection from
line 1 to line 3 (ch: 0). This command used to sort three lines (1 to
3) which is not what I expect. This change makes it sort only two
lines if there are no selected characters on the last line.

It also fixes a fatal error if there are more than one selection on
the same line (the code used 'range' instead of 'ranges').

It also selects the trailing newline after sorting the lines so that
the whole lines are selected.

Closes #3909

Add template/variable definitions, checking, types, additional
keywords and indentation fixes.