v2.0.0

Breaking Changes

1. The import shortstop handler is now resolved after the merging of config.json, [env].json, and before the other shortstop handlers are resolved.
   previously: import handler resolved only once, before the rest of the shortstop handlers.
   implementation 1, implementation 2, Issue, Pull Request

   New Behavior:

   { "main": "import:main.json" }                              // config/config.json
   { "key": "value", "otherKey": "otherValue" }                // config/main.json
   { "main": { "key": "devValue" } }                           // config/dev.json
   { "main": { "key": "devValue", "otherKey": "otherValue" } } // result

2. Source priority, from highest to lowest (higher overrides lower), is now: command line arguments, environment variables, [env].json, config.json, convenience (environment normalization and env:* keys).
   previously: source priority order, from highest to lowest, was [env].json, config.json, convenience, environment variables, command line arguments.
   Implementation, Pull Request

   New Behavior:

   // config/config.json
   { "KEY": "fromConfig", "OTHER_KEY": "fromConfig", "THIRD_KEY": "fromConfig" }

   OTHER_KEY=fromEnv THIRD_KEY=fromEnv node myApp.js --THIRD_KEY=fromArgv

   // result
   { "KEY": "fromConfig", "OTHER_KEY": "fromEnv", "THIRD_KEY": "fromArgv" }