Allow crs transform and precision to proceed separately.

Bump version and note changes.

Update change log.

Add missing fiona.fio package.

Merge pull request Toblerity#138 from Toblerity/new-source-layout

New source layout

Document collection indexing.

Update changes and credits.

Update changelog.

Note addition of bounds().

Remove a collection slice left in dumpgj (Toblerity#88)

Probably left in and accidentally committed after debugging.