CI fixes

See merge request !10

Working tests on the ci test runner

See merge request !8

Installing EVERYTHING with pip was not a smart idea...

Installing EVERYTHING with pip was not a smart idea...

Changed gitlab-ci.yml to use pip install -r requirments.txt instead
(which installes EVERYTHING!)

Deployment improvements

See merge request !7

# Conflicts:
#	.gitlab-ci.yml

# Conflicts:
#   .gitlab-ci.yml

Added environment.yml and requirement.txt.
GitLab should now produce html coverage artifacts.
io_vectordata: now warns if grid spacing is not equal in all directions.

Fix ovf reader

See merge request !6

CI implementation

See merge request !5