It's been a while, hasn't it?

Please remember if you don't want the challenges config reset, add "stop-hard-reset: true" to the challenges.yml file and it will only transfer the challenges to the new config format.

+ (Roughly) over 500 new challenges added!
+ Challenge configuration has become more compact
+ You can now have custom icons for each challenge
+ You can now create custom challenge sections!
+ Fixed zombie, skeleton and creeper default heads not working
+ Added /hp tests <Entity> <Amount> of which tests the chances of a specific entity's head dropping.
+ Fixed missing materials making the plugin unusable when updating a server from a legacy (<1.13) version to a post-1.13 version (by jascotty2, thank you once again for your amazing work!). Please also note I highly recommend resetting configuration when updating from legacy to a newer (>1.13) Spigot version.

Please also note this is only a BETA build, I still have some issues/features to address, such as:

+ Head stacking problem
+ Levels being re-added when removed
+ An issue when selling every head results in several boss bars (still no idea why this happens? Needs testing)
+ Adding a sell all option in the sellhead GUI

Any other issues please let me know. Thank you for your patience!