Add to future work
Add missing_filter exception
Constify filter arguments
Split find_by_index into must_ and may_
Implement dynamic filters
Reword
Fix dynamic tag and filter lookup
Add has_tag, has_filter to abstract_library
Implement has_tag, has_filter in python::library
Rename load_tag/load_filter to get_tag/get_filter
Unify engine/options type definitions
Implement dynamic library loaders
Add to future work
Relist
Fully generalize compile-time (fusion) vectors
Implement django's pprint filter
Allow built-in filters to be overridden
Add django variables sample
Add more info to binding test
Implement formats, debug, date_filter and time_filter