Implement our own inplace-sed function so we can update versions without leaving backups around on both platforms with GNU sed and with FreeBSD sed (@jerith).
Merge branch 'develop' of github.com:praekelt/vumi into develop
Allow fields to be retrieved from classes (mostly for testing and general sanity).
Add test showing problem with double-inheritance (fields from classes below the first are accessible but not in the list of fields (and so not validated).
Fix support for double-inheritance of config fields.
Merge branch 'feature/issue-695-fix-support-for-configs-with-double-inheritance' into develop
Merge branch 'develop' into feature/issue-677-smpp-transport-msg-processing-class