added automatic type inference
added date builtin
added time and datetime builtins
renamed symbol to camelcase
bugfix when parsing timezone
added math and string builtins
bugfix
bugfix
camelcased symbols
added ruleml test cases for new built ins
added testcase for type inferece
Merge pull request #14 from Schabernack/typeInference

added automatic type inference
Merge pull request #15 from Schabernack/master

Addition of various Built-Ins
Merge remote-tracking branch 'refs/remotes/oojdrew/master'