Enhancements
===========
- Unified Inch Screw Threads
Fixes
===========
- PCO-1881 internal (minor diameter was too small)
- Dpitch problem with G-ext threads
Improvements
===========
- developer docs
- build system
- unit tests
- user does not need to rotate internal threads by 180 deg anymore
to fit external thread
!! Incompatibel changes !!
====================
We take the liberty to do this while the major version is still 0:
- internal thread is rotated by 180 deg (see improvements). nut() and bolt() are not affected by this
