Version 3.0.0 First Release Candidate: Rebuild from scratch

First release candidate of the 3.0.x branch that is a rebuild from scratch including:
"Recursive, syntax colored, meta-programmed and fast"

• Improved DSL and metamodel
• Relations target submodel recursively
• Replace direct inheritance of the Scala collection lib with explicit conversions
• Add GUI with syntax colored editor using RSyntaxTextArea and JFlex
• Add auto-completion in GUI of metamodel terms by ctrl+space via Autocomplete
• Add graphviz export and visualization via pdf
• Metamodel is expressed in reqT enabling DSL generation by metaprogramming
• Include the scala libs in jar to require only Java JRE 1.7