freegroup 1.2-0

• multiplicative notation now implemented

freegroup 1.1-9

• bugfixes and small documentation improvements
• proper checking of subs() functionality
• rfreee()

freegroup 1.1-5

• improvements to the vignette
• bugfixes
• discussion of the Hall-Witt identity

freegroup 1.1-4

• commutator .[a,b] implemented