There was quite few changes and fixes introduced in this update to address majority of reported issues after 1.13 update was released. Big help out by:
montlikadani, LinzN, LogGits.

• Huge code cleanup
• Fixed NullPointerException while loading translatable words
• Fix for potion id's
• Plugin should properly disable itself if issue was found while loading
• Some fixes related to event API
• Now browse command while performed from console will have new and better look
• Fix for brewing stand id issue
• Added option to define how many players to show in top list
• Quest command will not return anything while performed from console, as it should not
• Added enchantments for GUI items
• Multiple fixes related to item material detection in item library. This will solve multiple issues when trying to detect correct item.
• Fix for issue with plant stages not giving money or giving them always independent from plant growth stage
• Updated German locale
• Now, if max-level, vip-max-level, slots, and rejoincooldown integers are missing, there will be no error.
• Added support for WOOL, to check all wool
• Now the potion drink works correctly
  
• Some fixes related to slab detection
• Fix for chicken issue
• Fix for issue when checking if entity is alive. Its alive!!!
• General library update to have more up to date one.
• Fix for issue with 1.13 and subtypes, which in general are deprecated in 1.13, but lets keep it for simpler transition.
• Improvement when checking entity type. This relates to Husk and similar strange mob names.
• Completely reworked how translatable words file look. Compacted from 2316 line file to 1102 which includes all possible items, entities and so on. So no more missing lines in the future updates. This is why plugin file shrink down slightly as there was quite some cleanup related to this change.
• New command /jobs resetquest (playerName) (job) to reset timer for player for particular or all jobs.
• Fixed issue with duplicated entries in quest list
• Fixed issue with enchantment names not being translated correctly
• Fixed issue with redstone ore as a breakable block for 1.13 version.