new:
- added "log-loading-no-world" settings in config.yml to disable the "No world matched" warning when a populator/decorator can't be registered because no world matched the provided names

fixes:
- fixed blocks not saved correctly if you place them after /iareload: https://github.com/PluginBugs/Issues-ItemsAdder/issues/1166
- fixed "No world matched" triggered even if a world is correctly found for populators/decorators: https://github.com/PluginBugs/Issues-ItemsAdder/issues/1168