Issue #3053

Opening the documentation in the same window navigates away from the
code editor.

Issue #3052

So that the CodeMirror.Pass it will return actually ends up in the editor.

Closes #3040

See http://discuss.codemirror.net/t/my-users-are-having-an-intermittent-issue-that-i-cant-reproduce/126

Also clean up style a bit. `perl.js` is oddly spaced!

Closes #3024

See http://discuss.codemirror.net/t/simple-mode-and-anchored-regexp/88/4

(Blint is the in-tree tool factored into its own npm package.)

Closes #3028

Issue #3023

They aren't faster, and don't work on pseudo-arrays.

Issue #3015

Issue #3019