Hunter Douglas shade plugin v1.12.7 to production

[sjenkins]

Sorry for churn but I found a long standing bug which was crashing the plugin if the connection to the gateway was locked-up and then reset.

VERSION = '1.12.7'
"""
1.12.7
DEBUG crash when connection reset by peer ; fix data
DONE remove separate open / close behaviour for G2/G3

1.12.6
DONE reverse open / close behaviour for G3 shades

1.12.5
DONE re-write SSE for G3
DONE fix motion if motion-stop missed
DONE battery low event added for G3
DONE force updates to server (helps with new eisy-ui)
DONE doc clean-up
DONE string clean-up
DONE improve logging
DONE bumped requests and urllib3 versions