v0.8: Make tabpy pip package (tableau#332)

### Improvements

- TabPy is pip package now
- Models are deployed with updated script

Migrate to Tornado 6 and other improvements (tableau#329)

* Added parameter for configuring timeout for /evaluate. (tableau#298)

* Added configurable timeout.

* Added unit test for custom evaluate timeout.

* Fixed evaluation timeout, added integration tests + additional UT.

* Documentation updates.

* Reverting state.ini.

* Updated file path in server-config.md.

* Fixing pep8 issues.

* Improved timeout error messaging.

* Fixed docs, removed debugging prints.

* Returning HTTP code 408 on eval timeout.

* Querying models through /evaluate causes server hang. (tableau#300)

* Made call_subprocess non-blocking.

* Magic?

* Using native coroutines in EvaluationPlaneHandler.

* Updated docs to reflect timeout limitations.

* Resolved markdownlint issue.

* Back to tornado coroutines.

* Fixed pep8 style.

* fixing regex issue where . were not allowed in endpoint path (tableau#305) (tableau#306)

* adding t-test to pre-deployed models (tableau#312)

* adding t-test to pre-deployed models

* fixed pep8 issues

* import error on ttest and updated successful deployment message for sentiment analysis

* fixed md issues

* fixed endpoint name in integration tests

* refactor redundant code and update md

* Add FAQ.md (tableau#325)

* Update README.md

* Create FAQ.md

* Fix models call via /evaluate in HTTPS (tableau#322)

* Fix models call via /evaluate in HTTPS

* Restore state.ini

* Delete 'Supported Configurations' page (tableau#327)

* Upgrade to Tornado 6 (tableau#328)

* remove asyncronous attribute for coroutines

* Remove dependency on jsonschema

* Fix markdown

* Update setup.py

* Add tornado to travis script

* Add tornado to travis script

* Remove tornado-json dependency

* Update VERSION

* Update CHANGELOG

* Fix pycodestyle warnings

Update version (tableau#307)

* fixing regex issue where . were not allowed in endpoint path

* updating version numbers

Merge pull request tableau#258 from tableau/dev

v0.4

Merge pull request tableau#161 from tableau/dev

## v0.3.2

### Breaking changes

- Logger configuration now is in TabPy config file.

### Improvements

- Remove versioneer and just replace it with VERSION file
- Require Python 3.6.5
- Require jsonschema to be compatible with 2.3.0
- Added setup instructions (known issues) for CentOS

Merge pull request tableau#154 from tableau/johng42-patch-1

Update setup.py

Merge pull request tableau#147 from tableau/dev_wa

Based on code review feedback from @WillAyd

Merge pull request tableau#138 from tableau/RestoreSetupFiles

Add setup files which were deleted by mistake