Yet another documentation update.

Further fix to the documentation table of contents.

Fix documentation table of contents.

Update documentation table of contents.

Add reference to blink.cmp commit to documentation.

Merge branch 'test_highlighting'

Merge branch 'master' of https://github.com/micangl/cmp-vimtex

Update documentation.

Add toggle for entry origin (fix #25).

Merge pull request #23 from wduminy/patch-1

Minor improvments to tutorial

Update documentation.

Update documentation.

Add support for documentation menu highlighting.

Unwrap call to vimtex#bib#files from pcall.