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*New:*
* Improved "loose" specification support (``>~``, ``<~``, ``!~``)
* Introduced "not equal" specifications (``!=``, ``!~``)
* :class:`~semantic_version.SpecList` class combining many :class:`~semantic_version.Spec`
* Add :class:`~semantic_version.django_fields.SpecListField` to store a :class:`~semantic_version.SpecList`.