Merge pull request #2 from gajop/master

Small fix for is_A class method
tostring/printing classes/objects
Slight enhancements
Fixed a silly bug previously introduced
[instance]:is_A follows object inheritance tree
Indentation fixes
Providing a patch for table attributes not being duplicated issue (see #5)
Subclasses can now be abstract/final, and fixed a bug with :super method

Use the new :abstractExtends and :finalExtends methods to create
abstract/final subclasses.

In addition, fixed a bug wherein a superclass' method that uses :super
inside it would not properly go to said superclass, when itself called
with :super
Bugfix + Indentation fixes

:super now refers to the superclass in the context where the method was
defined, even if it was defined in a superclass
Merge pull request #6 from dvorakroth/master

Fixes to callFromSuperclass + subclasses can now be abstract/final
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Merge pull request #7 from bitdeli-chef/master
Fixes #10
Fixes handling of references in the register (see #11)
Updated LICENSE
Merge pull request #1 from Yonaba/master

update from upstream