Implemented the abs(x) function, added abs(), cos() and tan() to the configuration.
Implemented the MathUtils class to supply additional Math functions not provided by java.lang.Math. Added a Test for the class and added it to the TestSuite
Implemented csc(a), cot(a) and sec(a) and corresponding tests, added the tests to the TestSuite.
Added cot(a), csc(a) and sec(a) to the default configuration.
Updated the readme to contain a list of supported operators/functions.
Apparently Gitlab has a markdown parser that differs from githubs. Changed the readme to be rendered correctly in GitLab as well.
Missed the last list character
Merge branch 'develop'

Conflicts:
	README.md