Document iterator slicing.

Closes #134.

Also adopt position args as with slice().
Finish tests of #132.

Bump version and update change log.
Fix argument conflict.

Python 2 won't let default args precede an arbitrary *args.
Upda
Move sources to more std locations.

Matches Shapely and Rasterio.
Merge pull request #138 from Toblerity/new-source-layout

New source layout
Add rbuffat to credits.
Small typo
Merge pull request #139 from dimlev/patch-1

Small typo
Next steps for the fi script.

Closes #142.
Dump and load commands.
Merge pull request #143 from Toblerity/issue142

Next steps for the fio script.
Remove translate command.

Also fix CLI docs and a bug in reading RS-delimited text sequences.
RS were messing up the docs.
Fix typo in docs.
Add missing fiona.fio package.
Add cat and collect commands.

Also, load now takes JSON sequences.
Update CLI docs.

Also make RS the first choice for text separator. It can be
detected and makes everything simpler.
Merge pull request #150 from Toblerity/fio-cat

Fio cat
Dict comps not available in Python 2.6.

Closes #148.