v4.18.0 - Performance & QoL improvements

[AlessioGr]

ATTENTION: VERSION 3 AND OLDER ARE NOT COMPATIBLE. ⇒ [Updating from <v4 guide](https://www.notquests.com/docs/documentation/updating-from-v3-or-older/).

• [^] Big performance & internal improvements to expressions (=> better performance for actions & conditions). Static expressions are now cached and not calculated anymore.
• [+] Added %QUESTCOOLDOWNLEFTFORMATTED% placeholder for language files. It's configurable in language files
• [+] Added %notquests_player_quest_cooldown_left_formatted_QUESTNAME% PlaceholderAPI placeholder. It's configurable in language files
• [+] Added optional --notifyPlayer flag for the QuestPoints variable

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This discussion was created from the release v4.18.0 - Performance & QoL improvements.