Add mruby debugger (mrdb)
mruby-1.1.0
Merge pull request #2640 from mruby-Forum/v1.1.0

mruby-1.1.0
Fix an error when calling a method implemented in C by super() with arguments. This fix makes the following code workable:

Expected:

class MRBTime < Time; def self.new; super(2012, 4, 21); end; end
MRBTime.new # => Sat Apr 21 00:00:00 2012

Actual:

class MRBTime < Time; def self.new; super(2012, 4, 21); end; end
MRBTime.new # => can't convert nil into Integer (TypeError)
[ci skip] run spell checker on doc/debugger/README.md and fixed typos mentioned from @bovi and @rmosolgo; ref #2640
Merge pull request #2641 from sdottaka/super-fix

Fix an error when calling a method implemented in C by super() with argu...