Add corresponding unit test.
Closes #66

Use OpmResult defined in error module.

Add general OpmResult typedef to error module.

Further code cleanup

code cleanup

This cleans up the example code a little bit.
Fixed detector.export_data.
Generate diagram before performing analysis. If analysis fails,
a diagram is generated anyway.
Update various examples to use the aboe save function.

Resolve "CLI: show git commit hash in version info"

Closes #55

See merge request !20

Resolve "Beam splitter: analysis for "inverse" mode not working correctly."

Closes #41

See merge request !19

Resolve "Implement general report generation mechanism"

Closes #20

See merge request !18