prepare release 0.38.2
prepare release 0.38.2

Conflicts:
	CHANGES.txt
	core/src/main/java/io/crate/Version.java

husky-koglhof/crate,aslanbekirov/crate,gmrodrigues/crate,EvilMcJerkface/crate,crate/crate,husky-koglhof/crate,aslanbekirov/crate,puneetjaiswal/crate,aslanbekirov/crate,husky-koglhof/crate,EvilMcJerkface/crate,sunny256/crate,crate/crate,adrpar/crate,gmrodrigues/crate,sunny256/crate,crate/crate,gmrodrigues/crate,adrpar/crate,EvilMcJerkface/crate,puneetjaiswal/crate,adrpar/crate,sunny256/crate,puneetjaiswal/crate