Towards 8.2 release

• test Geant4 10.5 (compilation only)
• issues / pull request
  • PR 209 muMap. Need doc.
  • PR 205 Phase space float/double
  • PR 212 fluence actor. Need doc.
• cmake: add test to check if root >= 6
• inform email 25/01 morning
• merge
• log (list of modifications)
• test benchmarks
• change version number in source code
• tag
• enjoy

Release date: 14/02 -> 15/02 morning