Blender Git Loki

Improvements to the base BPyTextPlugin module:
- Added a centralized function for resolving targets (aaa.bbb.ccc)
- Added documentation support for locally defined classes and methods
- The time taken to parse now dictates how long to use the cache before parsing again
- Other tweaks and comments and support for numeric var types

The text plugin scripts have been updated to make use of these features.