Version 2.3

This version includes code contributed by Simon Baxter. The changes are largely aimed at improving the import and conversion of STL files generated from Blender but also change some aspects of the STP files generated. Testing against a number of different STL files has not revealed any downsides. If users do find files that will not convert or convert with errors, please let me know.
Additional changes are mostly housekeeping; removing unused imports and correcting formatting.

Full Changelog: V2.2...V2.3

Version 2.2

Bug fix in Splitterator.
Modified file save routines.

Full Changelog: V2.1...V2.2

Version 2.1

This version adds a new 'splitterator' feature that allows multi body .stl to be split to individual .stl. These individual .stl are then converted to .stp format.

Version 2.0

This is actually the first public release of a reworked (in C#) version of code originally by slugdev.
It is significantly improved over the original in terms of performance and the size of resultant .stp files generated.
This release also includes an Add-on for Alibre that simply launches the StlStpConverter.
For converted files to be 'automatically' opened in Alibre, Alibre must be registered as the default editor for .stp file types.