* Add IPv6 support for isLocal checks
* Replace magic values like 127.0.0.1 and use our utility
* Support for IPv6 local adresses in IPv6 only or dual stack environments
* Loopback [::1]
* Site-Local fc00::/7
* Link-local fe80::/10
* Introduce extra method for loopback addresses
* Use public IP for passMaxLogin check
* Use non-local IP addresses in test after change in verification
- Some changes found in a very old patch :) - drop injection of PermissionsManager in favor of CommonService
- Rename IsEqualByReflectionMatcher's method to something more specific to differentiate it better from Hamcrest's equalTo() matcher
* #1497 Throw dedicated exception for invalid YAML files and handle it on startup
- Wrap SnakeYAML exceptions when loading config.yml and commands.yml on startup into own exception type
- Handle exception type on startup with specific error message
* #1497 Fix inaccurate JavaDoc comment
- Create method to check if email is empty or the default AuthMe email (avoids repetition)
- Check that input email has '@' inside text (relates to #1105)
- Checkstyle config: allow todo comments with issue number
- Create consistency tests across all classes, ensuring: unique class names, users of expiring collectors implement HasCleanup, non-private fields are only constants
- Fix tag replacement in PlayerListener for {DISPLAYNAME}
- Move check for restricted user into validation service
- Keep restrictions in a map by name for fast lookup, avoid splitting Strings on every call
- Gracefully handle case when entry does not have the expected ';' and log exception
- AsynchronousLogin: call common permission methods through CommonService instead of PermissionsManager
- CommandManager: remove superfluous replacement of %p (handled by lazy tag replacer)
- Remove unused method in CommonService
- Create DebugSectionConsistencyTest
- SendMailSSL: Enable debug output if AuthMe log level is set to debug
- Add Utils#logAndSendMessage and replace existing, separate implementations
- Add configurable cooldown period after sending an email for /email recovery
- Change ExpiringMap to remove expired entries (like ExpiringSet)
- Create method to translate durations via the messages file
- authme.cache to authme.data
- Rename PlayerData to LimboPlayer to match with LimboCache
- Move authme.converter to authme.datasource.converter
- Split output package into output and message
- Create BukkitService#runTaskOptionallyAsync and BukkitService#scheduleSyncTaskFromOptionallyAsyncTask whose behavior depends on a new setting
- Use the new methods where applicable
- Declare events async or sync depending on the new setting
- Handle AsyncPlayerPreLoginEvent in main PlayerListener class: Spigot emits it in offline mode, whereas offline CraftBukkit doesn't
- Remove listener for sync PlayerPreLoginEvent; not fired by offline CraftBukkit either
- Add warning when offline CraftBukkit is detected and single session setting is enabled
