Xtend/Xtend 2.7.2, Tycho 0.21.0
Bring back native Xtend sort method
All dependencies from parent pom.xml to k3-al, examples and tools
(temporarily) remove footprint classes (2.7 can't compile them)
initializeLater[] deprecated in 2.7
Unused import K3SLEJvmModelInferrer
newTypeRef is now deprecated
newTypeRef is now deprecated (continued)
No. more. warnings.
Update deprecated typesystem references API
Sub-inferrers need to explicitly inherits from AbstractModelInferrer in order to build jvm references
Using typeRef as an extension method is nicer
New typeRef needs an explicit context. Provide it in the preprocessor, or pass it while visiting the AST.
Abort compilation if AST is empty
Fix Xtext version: [2.7.0,2.8.0)
Merge branch 'master' into xtext-2.7
Merge branch 'xtext-2.7'