bumped version 0.5
fixed map access through . syntax
fixed grammar.md
started changes to native declarations
finished change in native declaration syntax
updated README.md, index.md and grammar.md
fixed list()
changed argument list from List to Vector for native functions
fixed tail recursive call marking
added script file with Ackermann function definition
added rosetta.funl containing solutions for tasks at rosettacode.org
fixed rosetta.funl spacing
added to -predef-.funl
fixed test-lists.funl
fixed predef's and added type checking support for arrays
added % operator
added support for literal big ints
fixed set() and added more to rosetta.funl
added 'math' module with sqrt() and type checking predicate '::'
added general TraversableOnce evaluation in for loops and 'in' predicate