v9.0.0

Breaking Changes

• callbacks signatures are changed: the value is now a const char* newValue
• class renames: Config::Result => Config::Status, Config::SetResult => Config::Result
• Renamed Status enums to differentiate successful status and errors
• updated Result::bool() operator logic which now returns true on any successful status

Additions

• Added Result::isStorageUpdated()
• Added Config::stored(key) to check if a key is stored
• unset(key) now returns a Result too
• backup() now allows to backup all the keys (including defaulted ones) or only the keys stored by the user

Improvements

• Considerable memory (heap) improvements. In an app with over 120 settings, I measured a gain of several Kb of heap.

Fixes

• restore code was buggy
• setting an empty string was not working
• calling get() on a unknown key was returning blank instead of nullptr. Blank is a valid value and does not indicate that the key is not supported, like nullptr does

⚠️

• remember to never hold a returned const char* pointer returned by config.get(). If you need to, copy it to a String or std::string

Full Changelog: v8.0.2...v9.0.0