GROOVY-5632: Closure default params can cause BUG! exception in phase 'class generation'
GROOVY-5863: ImportCustomizer for CompilerCustomizationBuilder is not added to configscript CompilerConfiguration
GROOVY-5886 Added ObservableSet plus testcase
GROOVY-5872: Null values cannot be assigned to fields which type use a generic type
GROOVY-5812 fix type conversion bug for direct method calls
Merge pull request #91 from andresteingress/missing_customizer

GROOVY-5863: ImportCustomizer for CompilerCustomizationBuilder is not ad...
merged
Fix typos List -> Set
Merge branch 'master' of https://github.com/groovy/groovy-core
GROOVY-5074 Do not use ExecutorService to run code outside EDT, spawn a new Thread instead
GROOVY-5874: Closure shared variables are not rechecked in LHS of binary expressions
    * partial fix since there were two issues in one
    * test case for GROOVY-5893
Merge pull request #80 from andresteingress/GROOVY-5632

GROOVY-5632: Closure default params can cause BUG! exception in phase 'c...
merged
GROOVY-5886 Added ObservableSet plus testcase
Fix typos List -> Set
GROOVY-5074 Do not use ExecutorService to run code outside EDT, spawn a new Thread instead
GROOVY-5892: VerifyError if a closure is called using the shortcut notation inside an inner class
GROOVY-5446: Make @Delegate carry over method annotations
GROOVY-5890: Wrong method is selected for "isCase" using "in" operator
GROOVY-5888: Using spread operator should be allowed on arrays too
GROOVY-5884: SKIP doesn't work for constructors
GROOVY-5870: Type checker should not disallow casting an interface to another interface