Merge pull request #40 from toepoke/feature/37--onAdd-needs-a-separat…

…e-save-event-from-onSave

Feature/37  on add needs a separate save event from on save

refactor: Moved away from x1,x2,y1,y2 for boundary defintion to use n…

…,s,e,w instead.

chore: Updated change log with latest release.

Merge branch 'master' of https://github.com/toepoke/mapsed