Natha's Numenera v2.01 (English and French)

English version : 
- Slight change to the sheet : more detailed "Advancements" section, with fields to keep track of the 24 possible advancements
- Debugged API Script : the numeneroll function had a residual french word or two in the resulting chat text (on an automatic success)
- New preview image (thus, updated sheet.json)
- New readme.md :
  - cleaner layout
  - more detailed help/setting guide
  - link to the french version
- Replaced the .txt macro file by a .md file (better readability)

French version :
- Slight change to the sheet : more detailed "Advancements" section, with fields to keep track of the 24 possible advancements
- New readme.md :
  - translated to french 
  - link to the english version
  - cleaner layout
  - more detailed help/setting guide
- New help screenshot
- New preview image (thus, updated sheet.json)
- Replaced the .txt macro file by a .md file (better readability)