Trying to call endOperation on a half-constructed editor will never end
well, and the resulting errors will mask the actual error that happened.

Issue #2870

Changed background selected color to #303030, previous #202020 value is too dark.
https://github.com/cristatus/brackets-darker/issues/12

To be more intelligent about what kind of lines to indent.

Closes #2866

- Using `@` as `this`
- `and=` and `&&=`
- `or=` and `||=`
- `?=`

Closes issue #2832

To prevent infinite loops when the algorithm somehow doesn't converge

(It should converge, but infinite loops with nebulous termination
conditions are a rather bad source of hangs.)

I'm still torn about this, since it'll mask bugs.

Issue #2819

Issue #2819

Closes #2851

Fixed indentation for covergroups
Fixed indentation for import/export statements
Better handling of 'function' keyword in other contexts

- Takes `defaultTables` as optional option and hint columns from that
table without explicitly mentioning table name.
- Update doc/manual.html for sql-hint addon.

Signed-off-by: Nisarg Jhaveri <nisarg.jhaveri@research.iiit.ac.in>

Signed-off-by: Nisarg Jhaveri <nisarg.jhaveri@research.iiit.ac.in>

Issue #2836

When the buffer has only one line, pressing 'dd' causes
CodeMirror to throw an error "There is no line -1".

Closes #2817

(So that it plays nice with loadmode)

Also update the mode loading demo to make use of the info in that
file, allowing filenames and mimes to be entered.

Issue #2828