update doc

follow-up to ea3114b - bump version

fixes d99kris#84 - set default install dir to include dir and add uni…

…nstall support

fixes d99kris#79 - support multiple Load calls on single Document ins…

…tance

doc update

fixes d99kris#71 - use modern C++ casts

documentation update

follow-up to 7c8b652 - bump version and update doc

Follow-up to 59bd2ea - bump version and uncrustify code

fixes d99kris#48 - add support for dequoting cells