No 1.2.9, decided to use 1.3.0 as version number...

... due to the high number of changes. Compatibility imports are
included.

- Changed "New in 1.2.9" to "New in 1.3.0"
- Completed
docstrings that had no "italic-asterisks" surrounding the "New in x.x.x"
text.
- Renamed c4dtools.misc.boundingbox to c4dtools.misc.aabb
(compatibility import in c4dtools.misc added)
- Moved math functions
from c4dtools.utils to c4dtools.math