Tx-sendgrid-http-client

Added
- [Update register.py to use pypandoc](https://github.com/sendgrid/python-http-client/commit/6a3a63e2511b3df9c9ef23eebd5bcd80ad8821ae)
- [PR 21](https://github.com/sendgrid/python-http-client/pull/21): Support timeout. Thanks [George Kussumoto](https://github.com/georgeyk)!
- [PR 22](https://github.com/sendgrid/python-http-client/pull/22): Client can be pickled and unpickled. Thanks [Jussi Heikkilä](https://github.com/jussih)!
- [PR 26](https://github.com/sendgrid/python-http-client/pull/26): Create CODE_OF_CONDUCT.md. Thanks [Fredrik Svensson](https://github.com/SvenssonWeb)!
- [PR 30](https://github.com/sendgrid/python-http-client/pull/30): Create TROUBLESHOOTING.md. Thanks [Omer Ahmed Khan](https://github.com/OmerAhmedKhan)!
- [PR 33](https://github.com/sendgrid/python-http-client/pull/33): Update README.md badges and license. Thanks [Alfred Gutierrez](https://github.com/alfg)!
- [PR 34](https://github.com/sendgrid/python-http-client/pull/34): Update .md files for SEO. Thanks [Gustavo Siqueira](https://github.com/gugsrs)!
- [PR 36](https://github.com/sendgrid/python-http-client/pull/36): Added more badges to README.md. Thanks [Shivam Agarwal](https://github.com/gr8shivam)!
- [PR 41](https://github.com/sendgrid/python-http-client/pull/41): Added License link to README ToC. Thanks [Andrew Joshua Loria](https://github.com/ajloria)!
- [PR 49](https://github.com/sendgrid/python-http-client/pull/49): Add USAGE.md. Thanks [Adelmo Junior](https://github.com/noblehelm)!
- [PR 43](https://github.com/sendgrid/python-http-client/pull/43): Add PULL_REQUEST_TEMPLATE. Thanks [Aleksandr Sobolev](https://github.com/s0b0lev)!
- [PR 50](https://github.com/sendgrid/python-http-client/pull/50): Add Docker files and update README. Thanks [Stanley Ndagi](https://github.com/NdagiStanley)!
- [PR 69](https://github.com/sendgrid/python-http-client/pull/69): Simplify GitHub PR template. Thanks [Alex](https://github.com/pushkyn)!
- [PR 61](https://github.com/sendgrid/python-http-client/pull/61): License date range UnitTest. Thanks [Anfernee Sodusta](https://github.com/dinosaurfiles)!
- [PR 60](https://github.com/sendgrid/python-http-client/pull/60): Adds test for repo files. Thanks [Cheuk Yin Ng](https://github.com/cheukyin699)!
- [PR 47](https://github.com/sendgrid/python-http-client/pull/47): Add .env_sample file. Thanks [Rod Xavier](https://github.com/rodxavier)!
- [PR 66](https://github.com/sendgrid/python-http-client/pull/66): Update travis.yml to fail on Pep8 errors. Thanks [Stanley Ndagi](https://github.com/NdagiStanley)!
- [PR 67](https://github.com/sendgrid/python-http-client/pull/67): Made python-http-client comply with autopep8. Thanks [Madhur Garg](https://github.com/Madhur96)!
- [PR 81](https://github.com/sendgrid/python-http-client/pull/81): PEP8 updates. Thanks [~](https://github.com/delirious-lettuce)!
- [PR 73](https://github.com/sendgrid/python-http-client/pull/73): Add CodeCov support to .travis.yml. Thanks [Senthil](https://github.com/senthilkumar-e)!
- [PR 77](https://github.com/sendgrid/python-http-client/pull/77): Include code review in README.md. Thanks [Jared Scott](https://github.com/jlax47)!
- [PR 87](https://github.com/sendgrid/python-http-client/pull/87): Add manifest that includes the license in sdist. Thanks [RohitK89](https://github.com/RohitK89)!

Fixed
- [PR 24](https://github.com/sendgrid/python-http-client/pull/24): Fix Typo in CONTRIBUTING.md. Thanks [Cícero Pablo](https://github.com/ciceropablo)!
- [PR 23](https://github.com/sendgrid/python-http-client/pull/23): Fix Typo in README.md. Thanks [Cícero Pablo](https://github.com/ciceropablo)!
- [PR 28](https://github.com/sendgrid/python-http-client/pull/28): Fix Travis CI Build. Thanks [Kevin Anderson](https://github.com/kevinanderson1)!
- [PR 40](https://github.com/sendgrid/python-http-client/pull/40): Update contributing and readme - fix typo, ToC. Thanks [Alex](https://github.com/pushkyn)!
- [PR 54](https://github.com/sendgrid/python-http-client/pull/54): Fix code style issues. Thanks [Stephen James](https://github.com/StephenOrJames)!
- [PR 82](https://github.com/sendgrid/python-http-client/pull/82): PEP8 updates. Thanks [~](https://github.com/delirious-lettuce)!
- [PR 83](https://github.com/sendgrid/python-http-client/pull/83): Fix Travis build errors. Thanks [~](https://github.com/delirious-lettuce)!
- [PR 84](https://github.com/sendgrid/python-http-client/pull/84): Fix docstring variable name. Thanks [~](https://github.com/delirious-lettuce)!
- Fix [Issue 86](https://github.com/sendgrid/python-http-client/issues/86): Error converting Response.to_dict.

BREAKING CHANGE
- The breaking change actually happened in [version 2.3.0](https://github.com/sendgrid/python-http-client/releases/tag/v2.3.0), which I mistakenly applied a minor version bump.
- This version replaces error handling via HTTPError from urllib in favor of custom error handling via the [HTTPError class](https://github.com/sendgrid/python-http-client/blob/master/python_http_client/exceptions.py).

Added
- 19 Added support for slash. Created "to_dict" property in response object and exception class.
- Thanks [Lucas Cardoso](https://github.com/MrLucasCardoso)!

Added
- 17 Added support for error handling
- Thanks [Dibya Prakash Das](https://github.com/dibyadas)!

Fixed
- When Content-Type is not application/json, do not JSON encode the request body

Added
- Ability to set the Content-Type header