Merge pull request xmendez#244 from xmendez/deve

Deve

docker on tag and docs

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pin tox.ini versions

Merge pull request xmendez#213 from xmendez/dev

Merge Dev to master

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Fix pycurl unhandled exception xmendez#180 (xmendez#196)

New requests are added in the pycurl multi thread after perform (Fixes xmendez#180 )
Added py3.8 test job in travis and setup.py (fixes xmendez#190 )
Removed python 2 travis tests while figuring out with the build stalls when they run succesfully in Tox

Merge pull request xmendez#182 from xmendez/hotfix_pycurl_version

Hotfix pycurl version

Merge pull request xmendez#178 from xmendez/fix_http_parsing

ignore crlf until request line

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