geomdl v5.2.0

• Moved some six module functions and backports_functools_lru_cache module under geomdl directory
• Removed typing dependency (no time to add all typing hints, see docs for input and output types)
• Refactored imports, minimized internal dependencies
• Code rearrangement for some internal functions
• Refactored operations module (no API change)
• Updated multi module
• Updated elements module to make it consistent between its classes (minor API change)
• Improved dict-type file formats (JSON, YAML, CFG) to support trim curves and more (backwards compatible)
• Updated exchange_vtk.export_polydata to support tessellated surfaces and geometry containers
• Refactored tessellation module (internal API change, user API is the same and comes with improvements)
• Added tessellate.QuadTessellate class
• Added == and !=operators to SplineGeometry classes
• Added freeform module
• Improved the surface trimming algorithm to handle edge cases
• Added trimming module to fix different types of trim curves (open, multi-curve, etc.)
• Added an option to set trim curve sense; i.e. sense = 0 means trim inside, sense = 1 means trim outside
• Improved VTK visualization module to better handle surface and volume plots
• Added voxel visualization option to VTK visualization module
• Registered mode keypress events to VTK visualization module
• Added an option to generate custom visualization configuration while generating the visualization object
• General bug fixes and performance improvements
• Added more tests
• Documentation updates
• Released rwsat

Please note that trimming module is still experimental and it might not work with all types of trims. Module documentation will be released soon.