GriefPrevention 16.18

This release is compatible only with implementations of Bukkit 1.16 or higher.
Bukkit implementations include Craftbukkit, Spigot, Paper, etc.

Fixes

• #1009 Fix /abandonallclaims. @Jikoo
• #1045 An empty bannedwords.txt will no longer softmute players for any message. @Jikoo
• #1043 Remove legacy material load when using /gpblockinfo. @Jikoo
• #1050 Allow all zombie types to convert villagers to zombie villager. @lmichaelis

Features and Improvements

• #933 New piston handling options. Documentation updated to include the 4 options. @Jikoo
• #1029 Boats now no longer can break item frames in claims. @DrBot7
• #1037 Config option for minimum size of automatic chest claim. (Prevents small claims being created via the initial automatically-created claim.) @Jikoo
• #1042 Dynamically support all vault-based economy plugins. (No longer need to add economy plugins to softdepend.) @Jikoo
• #996 Config to disable piston explosion sound when a piston is denied. @FrankHeijden

API Additions

• #951 SignChangeEvent will be canceled if player is not allowed to build in the sign's location. @Deltik

And quite a few maintenance and tech debt items which can be found in the commits, lots of which were graciously provided by @Jikoo