Fixes in the style dialog, html syntax highlighting, and documentation.  Source Browser Go To now shows the line number, and parent of each class/function/import.  You can now set extensions for supported file types, and have the tabwidth, indentation type, folding, line endings, wordwrap, and comment string differ based on file type.

Oops.  The usetabs bit is not quite working yet.

Nevermind, it is working.  I forgot that usetabs
is not updated for files currently open.

(I will make some notes in the documentation)