Add some error patterns for bibtex

- "You're missing a field name"
- 'Too many commas in name'
- 'I was expecting a'

also cleaned up some trailing spaces in that function
Added equation reference snippet.
Added TeXcount support

Added support for the TeXcount Perl script by Einar Andreas Rødland,
which counts the number of words in the text of LaTeX files.
Change shortcut to ⌃⇧N, same as the existing statistics command.
Improved Show Outline command
Support CRLF line endings when scanning for options.

Fixes #1.
Do not parse includes that contain a variable.

The script would search for a file with the variables name and not find one, fixes #2.
Change shortcut to avoid conflict with tab switching.

Fixes #6.
Remove usage of SetFile.

Leaving off the .tex extension appears to work around the need for setting the flag to show the extension of the file. Fixes #7.
Update to latest version of latexmk.pl