Depend on pipes-safe >= 2.1
Merge pull request #25 from jhickner/master

Depend on pipes-safe >= 2.1
Bump upper bounds for `transformers`
Merge pull request #26 from jdnavarro/master

Bump upper bounds for `transformers`
Bump network-simple and pipes-safe upper bounds
pipes-network-0.6.3
Add Lazy version of "toSocket*"
Bump version