v0.16.0

• Update to the latest deps; remove Gulp from build 0bf5532
• Disable HEAD test that got broken in httpbin cc9985c
• Avoid rest/spread operations in mocha tests b803847
• bugfix: don't leak sockets when handling redirects, and honor provided http agent b92c959
• Fixed a minor issue in typings ce69feb

v0.15.0...v0.16.0