make sure --cmake can be used to pass any cmake not in the path.

valid before trying to parse it.

Remove redundant include

that involve sub matrix views (e.g. colm) to produce the wrong results when the
BLAS bindings were enabled.

Removes link to sourceforge mercurial repository

since C++11 sets all destructors to noexcept unless otherwise specified.

obvious button, made links look nicer with some better CSS.

have object parts labeled with OBJECT_PART_NOT_PRESENT it doesn't accidentally
move that non-present part rather than what you are clicking on.