prepare for v0.3.6 #54

Merge branch 'master' of github.com:up42/image-similarity-measures

update package version (#18)

update package version (#18)

Use nan to 0 in computing SAM mean (#15)

* YUse nan to 0 in computing SAM mean

* Bump version

Merge pull request #13 from up42/metrics_review

Metrics review

Merge pull request #12 from up42/metrics_improvements

Metrics improvements

Fix couple of bugs, bump the version. (#11)