Updating to work with requests-1.1.0
Updating to work with requests-1.1.0

Changed the way requests are created:
-> Parameters such as auth are now set in the Session instance instead of passed as parameters.

-> Removed use of request hooks (they were dropped in requests 1.0+).

-> Removed concept of JIRA.SUPPRESS_CONTENT_TYPE_AUTODETECT, instead of deleting request args I'm simply not defining contentType in headers.

m42e/jira,dbaxa/jira,m42e/jira,VikingDen/jira,coddingtonbear/jira,kinow/jira,dwmarshall/pycontribs-jira,tsarnowski/jira-python,pycontribs/jira,milo-minderbinder/jira,stevencarey/jira,awurster/jira,akosiaris/jira,kinow/jira,jameskeane/jira-python,awurster/jira,milo-minderbinder/jira,coddingtonbear/jira,tsarnowski/jira-python,systemadev/jira-python,VikingDen/jira,dwmarshall/pycontribs-jira,rayyen/jira,systemadev/jira-python,jameskeane/jira-python,akosiaris/jira,stevencarey/jira,rayyen/jira,pycontribs/jira,dbaxa/jira