Bump ruby_core_source + version

close #50
Bump to version 1.2.3
bump to latest source
Bump to version 1.2.4
Stub Debugger.run_init_script in tests

We don't need to use stuff from .rdebugrc in tests
Merge branch 'master' into pr/55
remove unnecessary requires and $LOAD_PATH manipulation
point to new tests, adjust travis for Gemfile
goodbye ol test suite :joy:
move new test suite in :sunny:
wrap osx specific test for travis sake
Bump to version 1.3.0
thanks @astashov :)
Merge remote-tracking branch 'upstream/master' into xml-output

Conflicts:
	Rakefile
	test/frame_test.rb
Implement our own #binary_data?

It was removed from 1.9.2, and moved to Syck. But it is not a good idea
to require 'syck', because someone can require 'psych' after that, and
they conflict with each other. Better to implement our own method
Fix tests