Check make cf conventions configurable

See merge request !14

Use netcdf4 as default engine

See merge request !13

Do not print stuff

See merge request !12

Filter for only allowed engine keywords

See merge request !11

Increase test coverage

See merge request !10

Update README.md

See merge request !9

Update README.md

See merge request !8

Test coverage

See merge request !7

Update README.md

See merge request !6

Create python module

See merge request !5

Tests

See merge request !4