0.5.2 - pathing correction from external libraries

Includes updated to match those in openscad_objects, openscad_logging, & openscad_attachable_text3d: #1

Additionally: adds in a versioned VERSION file, and minor updates to the README.

Full Changelog: 0.5.1...0.5.2

Initial Fracture release 0.5

This is the initial "fracture" release, the first point of commits of the annotation-specific libraries from the 507 project. The modules and functions in this release are self-contained and should work with mmmmm.... let's say most standalone projects in OpenSCAD.

Of the things specifically held back are:

• mech_attach() and mech_compare(), because I'm still not happy with how those work right now. Look for them in a future release.
• A solid, unified position on how to emit console messages through these libraries. This might just be me being super ambivalent towards how echo() fundamentally works.
• Good Object-based obj() examples, because they're all in 507 and I feel that presenting hypothetical obj() calls is a duplication of effort.
• A good example of how to represent partno() and partno_attach() modules with animation, because I don't have one of those.

This 0.5 release was developed and tested with OpenSCAD 2021.01, and with the pre-release of BOSL2 circa 2023/09/11. After downloading and unpacking this release, rename the openscad_annotations-0.5 folder to just openscad_annotations, and move it to the OpenSCAD library directory for your platform.