v55.2: Update to Chrome 55.0.2883.59 and CEF 3.2883.1539.gd7f087e (#271).

cztomczak
2016-12-15T18:57:40Z

Update to Cython 0.25.2.

Fix Certificate Transparency support causing some SSL sites fail
to load after some time (cztomczak#279).

Fix ApplicationSettings.cache_path not working (cztomczak#283).

Fix: Not a clean shutdown in examples, when closing app while browser
is still loading a website (cztomczak#282).

Fix loading local filesystem urls that contained any of ? & =
characters (cztomczak#273).

Fix Request.SetPostData and GetPostData segmentation faults (cztomczak#228).

Add ApplicationSettings.net_security_expiration_enabled.

Update ExecuteJavascript docs with scriptUrl="" and startLine=1
default params. Also worth noting that ExecuteJavascript crashed
in earlier CEF versions when startLine wasn't provided or was <= 0
(Issue cztomczak#268).

Add a test that measures execution time for calling Python function
from javascript and then js callback.

Add Contributing guidelines / Issue template.

Update automate.py, include ceftests executable.