Code review

[peterdudfield]

{Meta issue} for a code review to tag a few people with. Would be great to suggestion

• any code improvements?
• point out if any code is not clear?
• some 'nice to haves' that would make things better

If you prefer I can make a PR for you to add notes, up to you

@aspasia
@samizdis
@liamreeves

Already notes issues:

• add test workflow (github actions) #1
• Build and push to dockerhub #2
• Add plotting example #5
• Update readme me #6
• (future work) Extent to 2d dimensional bayesian optimization #3

[peterdudfield]

Just added this PR #7 so its easier to comment