Performance Improvments,

Sneak Clicking and regular clicking your kit blocks no longer places a block occasionally causing your display items to fling all over the place (That worked well).
changing the kits type in the block editor gui no longer resets your mouse.
decor options no longer closes gui when settings are applied.
some of the lore in the decor options have been changed (They were ridiculous).
decor options no longer send chat messages when an option is selected (This was pointless since it shows you in the GUI).
In decor options the setting that edits the displayitem has been redone to be less awful.
In gui options the setting that edits the displayitem is also less awful.
Added the fancy EpicSpawners styled interfaces.
Settings Menu upgraded and configuration optimized.
The price settings were not only broken but they were totally unintuitive and well.. they were bad. This is no longer the case.
The Gui title thing was also broken and also unintuitive, this has also, been redone.
fixed a bug in the decor settings that would make it so you couldnt click after leaving the gui, nice.

.idea/vcs.xml

@@ -0,0 +1,6 @@
+<?xml version="1.0" encoding="UTF-8"?>
+<project version="4">
+  <component name="VcsDirectoryMappings">
+    <mapping directory="$PROJECT_DIR$" vcs="Git" />
+  </component>
+</project>

src/plugin.yml

@@ -1,6 +1,6 @@
 name: KitPreview
 main: com.songoda.kitpreview.KitPreview
-version: 5.3
+version: 5.4
 depend: [Arconix]
 softdepend: [PlaceholderAPI, Vault, UltimateCore, Essentials, MiniKitPvP]
 description: View a kit before you purchase it!
@@ -23,4 +23,4 @@ commands:
     description: Preview a kit
     default: true
     aliases: [pk, preview]
-    usage: /<command> [kit]
+    usage: /<command> [kit]0