Rewrite deflate and inflate as Process1
Rename gzip to compress
Document deflate and inflate
Stubs for g(un)zip and more tests
Add a simple gzip process
Move utf8(De|En)code to new text module
Remove gzip and gunzip
Use isEmpty instead of comparing with empty List
Merge pull request #138 from fthomas/zip

Rewrite gzip.inflate and gzip.deflate as Process1
Merge pull request #135 from fthomas/text

Move utf8(De|En)code to new text module
Merge branch 'master' of github.com:scalaz/scalaz-stream into wye-drain-fix
added optional `source` parameter to topic.