jspm 0.16.16

Features

• Upgrades to SystemJS 0.19.7 and SystemJS Builder 0.14.12
• Global config file lock (@apiv, fa03ff5)
• Support boolean and integer types in jspm config (@apiv, 043f6b3)
• transpiler: 'none' is now transpiler: false (227c120)

Bug Fixes

• Support for non-js mains (@unional, 7089f78)
• Avoid mutating process.argv (@jackfranklin, 3663820)
• Ensure errors are shown when using --log warn (eddf80e)