Here:

RangeFilter is used to specify a value of the two ends without specifying the other. It works by looking for "min/after" and "max/before" in the query param.

This should work:

UsingDateFromToRangeFilter, defined this way:

last_updated=DateFromToRangeFilter()

and passing the filter:
filters[last_updated_after]=2016-01-01

will execute:.filter(last_updated__gte="2016-01-01")

Currently it fails aslast_updated_after !=last_updated (as in the quoted code:base_filters containslast_updated but notlast_updated_after orlast_updated_before)