Merge branch 'release/1.7.5' into develop
Support Cybergame.tv
Merge pull request #324 from athoik/cybergame

Support Cybergame.tv
Handle read errors when using res.iter_content.

Resolves #325.
Support Bambuser.com

Resolves #153
Merge pull request #327 from athoik/bambuser

Support Bambuser.com
plugins.gomexp: Fix encoding issue on Python 2.
add support for SpeedRunsLive.com (fixes #334)
Merge pull request #335 from breunigs/develop

Add support for SpeedRunsLive.com (fixes #334)
Remove plugins using dead services.
Add a HTTP session to the plugin API.

This HTTP session is shared between all
plugins loaded in the Livestreamer session.
setup.py: Don't import version from package.

Since we now import a requests session into
the session module we can't import the livestreamer
package in setup.py anymore.
stream.akamaihd: Update to use new HTTP APIs.
stream.hds: Update to use new HTTP APIs.
stream.hls: Update to use new HTTP APIs.
stream.http: Update to use new HTTP APIs.
plugins.afreecatv: Update to use new HTTP APIs.
plugins.alieztv: Update to use new HTTP APIs.
plugins.azubutv: Update to use new HTTP APIs.
plugins.bambuser: Update to use new HTTP APIs.