Incompatible Changes

• linkopts and deps attributes in cgo_library were renamed to clinkopts and cdeps accordingly.

Features

• Update Go version from 1.6 to 1.6.2
• Allow Go assembler sources as source files in go_library, cgo_library, go_binary and go_test
• Add x_defs attribute to go_binary
• Support building external repositories imported by git_repository or other workspace rules