Make FileType autocmd buffer-local

Closes #129.
Revert "Make FileType autocmd buffer-local"

This reverts commit 69aa10170e6772b452d5cd45ba41df77d35394d0.

Refs #129.
Closes #132.
Add update to SFNT Table for font renaming

On Mac (at least) the font was being grouped with the original font, and
causing confusion for some programs.  This change updates the sfnt_names
table 'Preferred Family' and 'Compatible Full' fields to match the
new font name.  This will cause it to show up as it's own font in the
list on Mac.

Closes #136.
Use virtual column number for better mbyte support

Closes #135.
Add 16-color support to Powerline

Update the Highlight and Parser code to accept color strings instead of
color numbers.  This allows creators of color schemes to specify color
names so that Powerline can work without requiring 256 color support.

Closes #133.
Teach the divider code how to handle the reverse attribute.

When a color has been reversed, then it is being pulled from the field
opposite what we expect.  The foreground is stored in the background
attribute and vice versa.  This commit causes the divider to check the
reversed properties of the segment color to decide how to properly setup
the divider colors.
Fix paths containing tildes on Windows

Closes #126.
Add HGRev segment

Closes #115.
Use &buftype to detect help files

Closes #134.
Add aurum segment

Closes #127.
Cache file path to improve performance when editing remote files

Closes #114.
Use fnamemodify to modify the file path

This should ensure that we don't run into any more OS-specific path
issues, and we no longer need to use a regex to substitute the home
directory for Linux users.
Add skwp-Solarized Theme

Theme based on Solarized and Powerline default.

Closes #55.
Closes #122.
Revert "Add 16-color support to Powerline"

This reverts commit 216b20d3a2e51b6f92672a96672c837e20e41e59.

Unfortunately this breaks list colors (cterm and hex values) and this
must be fixed before the 16-color feature is merged into develop.
Fix typo causing skwp theme to always show Help
Use tagbar#currenttag instead of CFI

Current-func-info is far less used than Tagbar so it should work better
to use Tagbar's functionality to display the current tag in the
statusline.

Closes #139.
Hide currenttag segment in noncurrent windows
Fix typo in aurum plugin

Closes #138.
Fix whitespace issues
Check if tagbar exists before defining its segments

Refs #139.