FINAM v1 compatibility

See merge request !44

Feature: always use end of time frame as reference time

See merge request !42

Bugfix: additional variable meta ignored

See merge request !43

reader: always use end of time frame as reference time; add time_location feature; use bounds if present

Update installation instructions

See merge request !41

Update the changelog

See merge request !40

Fix project name in sphinx docs

See merge request !39

Clean up

See merge request !37

Remove 'Layer' and switch to 'Variable' mechanic

See merge request !38