Release 0.7

Add clamp filter.

Release 0.6

Introduce ~hidden keys for usage in lookups only.

Release 0.5

Support filters on arithmetic expression selectors.

Releases 0.4

Support arithmetic operations in spec selectors.

Release 0.3

More capable sort filter and new cumul filter.

Release 0.2

Introduces refill.filters and allows defining and using custom filters.

Release 0.1.3

Fixes minor bug in format_date filter.

Release 0.1.2

Makefile fixes and release publishing automation.

Release 0.1.1

Fixes params being a private attribute of Filler.

Release 0.1

First release!