Map arrays.each(), map() and reduce() to lodash implementations
Map objects.pick() and omit() to lodash implementations
Introduce custom functions.apply() with thisArg as last parameter

Lodash implementation takes thisArg as first parameter, which is not very convenient when applying functions instead of methods.
Introduce objects.wrap() to namespace object content
Move some core modules to core/storage submodule
Introduce Store#importAll() and exportAll() to import/export all store content
Implement JSON import/export feature using storage API
Add FileSaver.js dependency
Introduce loadStringFromFile() to read file content
Introduce saveStringToFile() to trigger file download
Implement import/export UI
Merge pull request #30 from sebn/import-export-with-new-app-functions

Import/Export