Requirements Updated + RTD Build Fix (tensorlayer#672)

* Requirements Updated + RTD Build Fix

* Requirements Fixed

Travis able to build tags following the tag naming convention

release 1.8.5 (tensorlayer#559)

1.8.5rc2 version bump (tensorlayer#518)

* Activation Cleaning Docstring Test

* Requirements Pinned with range to insure tested versions are used. Range are used to prevent updating requirements all the time.

* setup.cfg file added with PEP8 configuration

* activation.py refactored

* docstring fixed - ready for documentation unittest

* Yapf correction for max_line_length: 120

* test yapf refactored

* test documentation added

* Missing requirement added: sphinx

* Allow test on documentation to pass on warning

* Fix travis dependencies install

* Travis install script fixed

* Travis install command fixed

* Requirements conflict solved

* Yapf Style modified and merged in file "setup.cfg"

* Yapf Confiuguration Updated

* Code Refactored with new YAPF formating style

* Code Refactored with new YAPF formating style

* Code Refactored with new YAPF formating style

* shorten codes

* Various Cleaning

* Trailing Slashes removed

* Test Recurrent Fixed

* Line Width Fix

* docs requirements updated

* fix example docs style

* Codacy Issue Fixed

* Merge Errors fixed

* YAPF Style Applied

* Version Bump to 1.8.5rc2

Auto deploy with travis (tensorlayer#500)

* no message

* [Release] - 1.8.5rc1

* Password Ecrypted for PyPI badly encrypted

* Travis Encrypt Instructions added

* PyPI User Variable added

* Documentation Links for Travis Deploy Added

[release] 1.8.5rc0 - Deprecation Warnings added + Github Templates + …

…Test Suite Refactored (tensorlayer#497)

[release] 1.8.4 (tensorlayer#488)

Merge pull request tensorlayer#467 from tensorlayer/release-1.8.4rc0

[release] 1.8.4rc1

Merge pull request tensorlayer#445 from tensorlayer/release-1.8.3

release 1.8.3

release 1.8.3rc0 (tensorlayer#429)

* release 1.8.3rc0

* update links for examples