Acorn security fix

• Bump acorn from 6.4.0 to 6.4.1 2f37ddd

v2.0.0...v2.0.1

v2 with TS support

• rewrite to support TS and other things cd7988c

v0.0.6...v2.0.0

add local config, modify test env options

• local.yaml now overrides all others unless node env is test
• added option includeLocalInTest
• option fileOnlyNodeEnv replaced with includeEnvMapInTest

Improve README

that is all

Add external config

Adds the extConfig option to specify an object of config values which will be merged into the config before the ENV_MAP values are merged.

Change option names

• noModeConfig -> noNodeEnvConfig
• noEnvMode -> fileOnlyNodeEnv
• fresh -> reload

noModeConfig & isGlobal

• validate noModeConfig option
• warn or error on missing modeConfig if noModeConfig is set
• add isGlobal option for control over Copin singleton status