Road to v0.2

[matthewmturner]

This issue for setting the specific issues we would like completed before a v0.2 release. My hope is that there can be a release by end of Sept / Beginning of October.

• [ ] https://github.com/datafusion-contrib/datafusion-dft/issues/137
• [ ] https://github.com/datafusion-contrib/datafusion-dft/issues/138
• [ ] https://github.com/datafusion-contrib/datafusion-dft/issues/128
• [ ] https://github.com/datafusion-contrib/datafusion-dft/issues/144
• [ ] https://github.com/datafusion-contrib/datafusion-dft/issues/125
• [ ] https://github.com/datafusion-contrib/datafusion-dft/issues/153

[matthewmturner]

@alamb let me know if there is anything you would like to add