hdgeant4 2.21.0
- Update release
- @rjones30: add support for particle code 48 == neutral geantino [rtj]
- @rjones30: fix a bug in the FMWPC hits generation discovered by Beni [rtj]
- @rjones30: bug fixes in the hits energy deposition calculation for anode
- Differences from 2.20.0