Release 0.6 (tableau#126)

* Fix tableau#117 by only attempting files with the right extension inside the archive (tableau#118)

* Commenting and Docstring cleanup. A few very small code cleanups (tableau#120)

Add docstrings and remove clutter. I also made some very tiny tweaks to some code for clarity.

* Small cleanups for various editors. Play nice with built in test-runners (tableau#121)

* Add Py36, update travis to use pycodestyle (tableau#124)

* Add `initial sql` and `query band` support (tableau#123)

Addresses tableau#109 and tableau#110

* Prep for release of 0.6 (tableau#125)

* Prep for release of 0.6

* wordsmithing the changelog

Merge pull request tableau#108 from tableau/development

Release 0.5

Add tableau#80 to changelog (tableau#92)

* Updating link in readme

We renamed Examples to samples, but forgot to update the readme.

* Adding tableau#80 to changelog

Merge pull request tableau#78 from tableau/development

Release 0.3

Merge pull request tableau#66 from tableau/development

Releasing 0.2 to master

Merge pull request tableau#39 from RussTheAerialist/master

Updating README to include information for installing from pip