bump to v0.8.0

Adding option of using existing proxy port.

We have a long-running process with existing config
we'd like to reuse so that we won't have to start up
a new proxy with each run we make.

Signed-off-by: AutomatedTester <[email protected]>

Update changelog and setup for v0.7.0

Bumping version number

merge conflicts

updated changelog

updating changelog and setup for release

added headers support. fixes bosondata#1

updated text and dependencies