Add support for exponential function in parser. Cleanup code.
Add cli evaluator.
Prepare realease of 0.0.3
Add constructor for nth root.
Improve tests.
Parser now correctly handles associativity of operators. Parser now supports all default fnctions. Add exceptions to Shunting Yard algorithm. Rewrote Parser to use switch statement.
Fix example and update changelog.
Change Pow to right-associative.
Add test for power associativity.
Adds support and tests for unary minus.
Make string output of unary minus parseable.
Prepare for release of 0.0.4
Fix test to use new unary minus syntax.
Fixes a minor error in dart doc.
Update README.
Removes unnecessary casts (adapts to SDK 0.8.7).
Prepare for Dart 1.0
Bump version to 0.0.5.
Adds syntax highlighting to the examples in README.md.
Adds some dart docs. Improves dart doc generation.