Merge branch 'dev-reorg'. Close #248.

Re-structure repo so all libraries are separate top-level directories.

This branch reorganizes the repo so the libraries that compose the
project are clearly visible at the top level. The README, the
cabal.project, and the .travis.yml file are all updated to match the new
repo structure.

Author: ivanperez-keera

.travis.yml

@@ -21,4 +21,4 @@ before_install:
   - git submodule update --remote
 
 script:
-  - cabal v2-build
+  - cabal v2-install --lib copilot

README.md

@@ -1,3 +1,2 @@
 packages:
-  copilot.cabal
-  lib/*/*.cabal
+  */*.cabal