Version 0.6.19

Version 0.6.18

Version 0.6.18

vumi-0.6.17

==========

- Upgrade pyopenssl to at least 16.0.0
- Upgrade txJSON-RPC to 0.5

0.6.15

======

- Add session_id to helper_metadata for DMark

Bump version number to 0.6.15

vumi-0.6.14

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- Allow for fixing of to_addr for DMark transport

Merge pull request #1065 from praekelt/feature/OPENHELPD-158-release-…

…vumi-0-6-13

Release vumi 0.6.13

release 0.6.11

Merge branch 'develop' into release/0.6.x