CloudComPy For Windows 10 - Anaconda3, Python 3.9 - June 22, 2022

This version brings the following features:

• update to CloudCompare 2.12.3 (june 14, 2022)
• get the transformation matrix computed by the fast global registration function in PCL Plugin (issue #35), see test038.py
• compute a scalarField gradient (issue #46), see test003.py
• add an extra parameter to LoadParameters, to give a regex filter to ply reader, extra scalar fields selection (issue #51), see test040.py
• fix ccGLMatrix constructor, provide another alternate constructor and method fromString (issue #52), see test026.py
• build the doc on Windows
• Various small fixes.