account for package renaming hoohah in newer versions of boto
Merge branch 'master' of github.com:migurski/TileStache

Conflicts:
	TileStache/S3.py
patched tilestache-seed to allow for retries and to write failed tile requests to a log file
Remove 256x256 tile size restriction from proxy provider
Update sandwich provider to use tile_height layer prop instead of hard coded 256 tile size
Made access/secret properties optional, added optionl path property for s3 cache
Added Disk cache quadtile directory layout
Added some documentation for quadtile cache directory
update api docs for s3 cache changes
Merge pull request #101 from bwg/s3

Make access/secret properties optional for S3 cache, add path property
Merge branch 'master' of github.com:migurski/TileStache

Conflicts:
	TileStache/S3.py
	scripts/tilestache-seed.py
JSON all the things – untested
add getTypeByExtension to MBTiles; remove merge cruft (in S3.py); bump VERSION
update tilestache-seed.py to reflect reality; not sure how that happened
Add Vector Provider Tests
Merge pull request #100 from bwg/retina

Remove hard-coded 256px tile dimensions from providers
Merge pull request #102 from straup/master

Teach MBTiles.py to serve JSON
Merge pull request #105 from RBURHUM/vector_tests

Add Vector Provider Tests
Bumped to 1.45.0 with changes to S3, Sandwich, MBTiles, Disk and other cache & providers