README: fixed calls to matrix.set() to use zero-based indices
Merge pull request #63 from garrison/patch-2

README: fixed calls to matrix.set() to use zero-based indices
Changed matrix index notation of expression parser from round brackets (...) to square brackets [...]
Docs, examples, readme updated
Some todo's and error messages added to the random functions
Released version 0.12.0
Merge branch 'develop'

Conflicts:
	README.md
Fixed outdated readme and fixed broken unit test
Some more minor fixes in the readme
Released version 0.12.1
Updated version number to 0.12.2-SNAPSHOT
added math.map function see #68