Add option for blocking latex input
Added writeIn ability (to add a block and place the cursor in the added block).

The writeIn API lets you create buttons for basic operations and
places the cursor in a sensible position to begin editing the math
entity you've just added via the button.
Automated transformation of math words.

This makes 'math words' like sin or cos into the proper mathy
equivalents when typed.
Hat math commands!
\textcent
Character counting
Merge branch 'refs/heads/feature.more-commands'
Merge branch 'refs/heads/feature.more-symbols'
Merge branch 'refs/heads/feature.latex-blocker-flag'
Merge branch 'refs/heads/feature.char-count'