New rio stack command.
zip_longest for Python 2 and 3.
Merge pull request #180 from mapbox/issue176

New rio stack command.
Document rio-stack.
Improve doc markup.
Overhauled documentation in features module and cleaned up PEP8 warnings
Coverage ready tests for rio-insp, bounds, transform.
Write/update PNG and JPEG.

Indirectly, using MEM datasets as an intermediary.

Closes #177.

Also add --driver option to rio-stack for integration testing.

Move CLI main to main.py
Merge pull request #182 from mapbox/issue177

Write/update PNG and JPEG.
Merge pull request #181 from brendan-ward/issue161

Overhauled documentation in features module and cleaned up PEP8 warnings
Update change log and version.
rio-info tests.
rio-env command and tests.
Remove older scripts.
Make -f and --format aliases for --driver

Closes #183.
Merge pull request #185 from mapbox/issue184

Remove older scripts.
`output` is superceded by `out`.

Warn if `output` is used.

Closes #179.
More robust out/output switching.

Port sieve example to warning free code.
Add date for 0.15
Set organization instead of license boilerplate