Use latest Conduit API

• Port to Conduit 0.6.0 API.
• Depend on ocaml-hex

Remove core_kernel dependency and use nocrypto

• Remove the dependency towards core_kernel
• Use ocaml-nocrypto instead of ocaml-sha1

Compatibility with the Mirage's V1_LWT.FS signature

• Can consume Mirage's V1_LWT.FS signature to generate a
  persistent store. This allows to store Git repos directly
  inside raw block devices (no need of filesystem anymore).
• Minor API refactoring to abstract the unix layer cleanly
• Expose a filesystem functor to create filesystem backends
  independent of unix
• Simplify the ocamlfind packages: there's only git and git.unix

Basic push support (unix only for now on)

• Support for push (not optimized at all)
• Fix the generation of .dot file representing the Git repo
• Fix serialization of executable files in the cache
• Fix reading the total number of keys in a pack index file
• Use ocaml-conduit to set-up connections with remote repositories
• USe ocaml-uri to specify Git Remote Identifiers

Propagate Zlib inflation errors

• Catch, improve and propagate Zlib inflation errors (which usually on incomplete files)

Escape invalid chars in path names

• Escape invalid chars in path names
• Do not link with camlp4 when using as a libray

First release

• Full support for the format of all the Git objects
• Partial support for the synchronisation protocols

fix reading of reference files created by the Git command-line

• Strip the contents of references file (this fixes reading of reference files created by the Git command-line)
• Improve the pretty-printing of SHA1 values
• Add some info message when reading files in the local backend

Fix build and expose more functions

• Add missing files (fix build)
• Add GitTypes.S.mem_reference
• Add GitTypes.S.remove_reference
• Add GitTypes.S.mem to check if an object exists in the store

fetch operation + in-memory store

• Support for in-memory stores
• Add ogit cat-file
• Add ogit ls-remote
• Add ogit fetch
• Add ogit clone
• Switch non-blocking IO using Lwt