Declare v1.7

Declare v1.6

Declare v1.5

Declare v1.4

Declare v1.3

I don't appear to have been bumping the version number here very
much, probably as this project doesn't (yet) have proper releases.
In any case a lot has changed since 1.2, though probably nothing
breaking.

Update output for proton 3.0.0-rc2

Change-Id: I94d67cbd09be7d8e9e8c8f9b19500536c56240f4

Fix use of allow_empty