* switch to show all monkeypatches is now -a (for all)
* improved some method names (top_method_candidates => method_candidates in wrapped_module.rb)
* improved in-session documentation for show-source and show-doc
* applies to modules/classes, displays the full list of candidate module definitions or documentation (in case of show-doc)
* TODO: a fucktonne of tests
* also defined a WrappedModule#doc
* TODO: define a module_object (analogous to method_object) for method_options(), to further DRY up show-doc and show-source