minor release
PR #6: supporting requiredLangs of langs to fallback lang bundles and lang entries when needed.
Details
The requiredLangs configuration specifies an array of required languags. If this value is set, the plugin will complete language bundles and/or entries based on the defaultLang. In other words, if you haven't done the translation for a particular language, the plugin will fallback to the default language bundle by using the default values as the values for the missing language. The same happen for individual entries in each language bundle, and the plugin will be able to analyze each file, and fallback to a default entry/message when it is missing in a particular language bundle. This guarantee that your application can assume all entries/messages and lang bundles are in place for all the languages in the requiredLangs configuration.