doh, changes for release

prep for release

updates to tests and docs

Merge branch 'master' of ssh:https://github.com/agile-geoscience/welly

Merge branch 'master' of ssh:https://github.com/agile-geoscience/welly

merged

Merge branch 'master' of https://github.com/agile-geoscience/welly

ready to release

Merge branch 'develop' of https://github.com/agile-geoscience/welly i…

…nto develop

merge: