fix symbol highlighting in ifancy
Fix parsing on / operator. closes #64. Refactor method_def parsing.

The new method_def parsing will make it easier to get #65 done.
Remove bug hunting expression.
add comments & docstring to Symbol for clarity
cleanup ifancy CodeRay code highlighting
cleanup
fix formatting
moved lib/eval.fy into lib/rbx/eval.fy since it's pretty rbx specific
cleanup Block#to_object
add optional reraise: argument to Block#call_with_errors_logged_to: & Block#call:with_errors_logged_to:
FancySpec cleanup
allow to specifiy more than one method associated with a FancySpec test case
improve Range#inspect and add spec