Add external language support (microsoft#82)

Add external language support - users can add a language_name to run on an already installed external language.

Add external language support (microsoft#82)

Add external language support - users can add a language_name to run on an already installed external language.

Set max wheel version for pep425tags (microsoft#83)

* max wheel version and sysconfig

* update version to 1.0.3

Jonathan zhu11/source (microsoft#80)

* update dist files

Add Travis CI for Python (microsoft#74)

- Add Python testing to the Travis-CI
- pip moved away from holding pep425tags in their codebase in pip version 20+, so we just import from wheel instead.
- The way we resolved requirement specs was not the most robust. We can just use pkg_resources's Requirement class functionality instead of writing our own. In particular, our original implementation did not work with "~=".
- Removed a number of tests that were redundant. These tests were fine when run on the user machine, but when run on the Travis-CI server they will time out.

Add check login test (microsoft#71)

* Add check login test
* Update packages

Fix check for managed instance and update version number (microsoft#69)

Change pyodbc connection from using args to using string (microsoft#67)

Modify READMEs for R installation (microsoft#63)

* Update repo from which RODBCext is found

* Add tar.gz for linux

* fix READMEs for RODBCext

* remove titling

* add extra space

Change pymssql -> pyODBC (microsoft#58)

Major changes to sqlmlutils internal implementation. User experience should be largely the same as before, except with the addition of output parameters.

* Change to pyodbc instead of mssql
* Add print capture to exec
* Add Output Param support and stdout/err in sprocs
* change testing for python package management
* README updates
* Fix license headers
* Update version number to 1.0.0