Do not expose Conduit and Message directly
Adding haddock documentation for partial merkle trees
Relaxed dependencies
Adding haddock documentation for bloom filters
Merging util functions under the same module
Revert "Relaxed dependencies"

This reverts commit 0be46c2f439a06454349265fc1a7f6978cc220b1.
Merge branch 'master' of github.com:plaprade/haskoin