Merge pull request golang#170 from golang/iss102

Fix output for empty interfaces. Added a test.

Merge pull request golang#167 from golang/iss166

Fix golang#166

Merge pull request golang#157 from hypnoglow/fix-mockgen-custom-impor…

…t-paths

Fix mockgen for package name not matching import path

Arbitrarily naming the current version as 1.0.0. Backwards-incompatib…

…le changes will increment the major version.