the receiver should be included in ancestors even when it's a singleton class
Remove mrb_class_obj_get
ArduinoDue Target Cosmetic Change

small cosmetic change
Cosmetic improvements of mrbgems documentation

Cosmetic improvements of mrbgems documentation
Implement :core parameter for conf.gem
Apply :core parameter to default.gembox
Apply :core parameter to full-core.gembox
Merge pull request #1224 from h2so5/remove-mrb_class_obj_get

Remove mrb_class_obj_get
Merge pull request #1226 from bovi/patch-1

ArduinoDue Target Cosmetic Change
Merge pull request #1227 from bovi/patch-2

Cosmetic improvements of mrbgems documentation
Merge pull request #1228 from bovi/mrbgems-core-gem

Implementation of :core parameter for conf.gem
Merge branch 'master' of github.com:mruby/mruby
Improve Gem::Specification for support of dependencies and requirements
Add more documentation for Gem::Specification
Improve mrbgems documentation
Fix add_dependency declaration documentation
Push Copyright year up to 2013
Merge pull request #1230 from bovi/copyright-year

Push Copyright year up to 2013
Merge pull request #1229 from bovi/dependencies_requirements

First strik on GEM Dependencies
Merge branch 'master' of github.com:mruby/mruby