GROOVY-6649: Support a Sortable annotation and transform (tweak for primitives)
GROOVY-6709
withCloseable{} DGM method for Closeable
Restore full imports
Add JavaDocs for withCloseable {}
GROOVY-6356: Working with namespaced attributes awkward with XmlSlurper (fix regression when namespaceAware is false)
Merge pull request #385 from glaforge/with-closeable

GROOVY-6709: withCloseable{} DGM method for Closeable