0.6.0

New features

• You can now specify a default group for all filters in a FilterSet, this setting is also globally available.
• You can now create subgroups to build complex group relations. Check documentation on subgroups.
• Added FilterSet.get_combinator method to dynamically resolve combinators.

This release contains a breaking change:

• Creating Entry objects without specifying groups is no longer allowed.

Full Changelog: 0.5.2...0.6.0