3.0.12

Latest version with a lot of bugfixes compared to the version 3.0.0:

• Added conditional escape parameter to .content_str() method.
• Fixed parent problem with .__deepcopy__().
• Implemented proper .__copy__() and .__deepcopy__() methods.
• Fixed the way how the quotes are escaped in the tag parameters.
• Fixed behavior of the .__hash__() method for nested tags.
• Don't escape <script> and <style> content's.
• Fixed behavior of .match() method.
• Added new method .match_paths().
• Added tests.
• Bugfix; SpecialDict.copy() didn't return any value.
• Bugfix; Don't search empty tags.
• Bugfix; Always return container element for small doms with only strings inside.
• Added .__hash__() method for Tag.
• .replace_with() method now accepts str as well as Tag.
• Fixed problems with .parent setting for non-pair tags in the parser.
• Added bunch of tests to test newly added stuff.
• Added .__contains__() method for Tag, so you can now test parameters using in operator.