Fix improper lists generated by absname
Update docs with some working examples
Formatting for the Hub

The rendered markdown did look alot better on my computer. Not it looks decent on Github aswell :)
Minor changes to readme
Make pr. abstration sub-folders
Add support for <target> :<env> instructions in epm config

Adds parser support for filtering directives based on the current
environemnt
More intuitiv cmd parser
Fix support for parsing w/env

+ add some basic encoding
Add support for referencing latests git tag with '_'
tmp
Add basic support for overriding packages

If you need a fix in a deep dependency, just use the ~ operator with the pkg abspath
this will create a callback that will run after all configs are parsed.
Allow for wildcard tag status in epm_git
Add support for fetching a dependency by it's path relative to a package
Update config interface

+ Add global storage using gen_server
+ Start using 'pkgs' instead of 'deps' in #cfg{} record
+ Automatic startup of epm_store
Improve parsers (epm_store, isolation etc)

+ Use epm_store:{get,set} directly to always keep a updated config
+ Add package isolation
+ Add partial packages (append values to pkg)
+ Add concept of template pkgs
Always set catalog in github catalog templates
Set pkg template flag to false when copying a pkg
Update to gen_server based configuration

+ Cleanup rebar parser
+ Add support for listing configs
+ Make all hooks needed for creating isolated configs
+ Add default "master" ref to git agent
+ Include top-level project in pkg hirarchy, for multi-apps configs later
+ Add dummy agent (epm_agent_void) for top-level apps
+ Remove cfghook callback system
Fix error where re-defining toplevel package would break config

If a re-define operation is called (<-) the toplevel project gets deleted
Code consistency, epm_store:get should always return {ok, _} on success