Minor new additions for v20 (#147)

* Moved TMs/ TRs and HMs into their own handlers
* Improved Plugin Error Message
* Added sound effect when picking berries
* Allow player to always see quantity when buying items
* Trainers now require a Mega Ring item in their items (in trainers.txt) to Mega Evolve

Data/Scripts/001_Technical/005_PluginManager.rb

@@ -356,7 +356,7 @@ module PluginManager
     Graphics.update
     t = Thread.new do
       Console.echo_error "Plugin Error:\r\n#{msg}"
-      p "Plugin Error: #{msg}"
+      print("Plugin Error:\r\n#{msg}")
       Thread.exit
     end
     while t.status