checksums

checksums is used at run time in 5 crates. It's used at build time in 1 crate.

Number of dependers	checksums version	Downloads/month
4	0.9.1	250
1	0.7.1	6
1	0.5.5	35

Depender			checksums version
		csum		=0.9.1
		tmpshare		^0.5.5
		bitslides		^0.9.1
		cramino		^0.9.1
		avra-rs	build	^0.9
		tarsum		^0.7.0