V2.4

Lots of fixes and improvements.

• Modifying content inside EventSMB and AnimatorEvent while playing is now possible, but alongside a warning message that changes won't be saved.
• Added support for several AnimatorEvent with the same Animator.
  
• Added a button to not show errors when trying to execute an event that isn't present on any AnimatorEvent attached to the Animator.
• Added a button to not execute events if it's on a layer with 0 weight. Now the default is to not execute events on 0-weight layers.
• Default EventSMB color now depends on the Unity skin (dark or white).
• EventSMB now changes it's text color depending on the brightness of it's background.
• Fix Copy-paste feature now supports the undo system.
• Added a block of extra conditions to all EventSMB blocks called "Conditions Extra" that makes it easier to further specify when an event can be fired.
• Fixed previsualization of animations, now BlendTrees can be fully previsualized instead of only previsualizing the first animation it has.
• Advanced events are now displayed and edited inside the EventSMB instead of using a secondary window.
• Better text that sumarizes what an advanced condition does.
• Added AND and OR condition groups that are easier to use and understand that old AND and OR.
• Added support to copy, paste and save into an asset a group an advanced condition.
• Added Less, Greater, LessEqual and Distinct parameter conditions.
• Added a condition to check the current Layer.
• Added a condition to check the layer weight.
• Added MIN and MAX operators for parameters.
• Added "copy all entries" button.
• Added inline events (Show the event setup window that's shown inside the AnimatorEvent directly into EventSMB).
• Fix null delegate conditions now have a better error message.
• Improved Readme file.

Also, price increased from $15 to $17 to better match the net cost on the Unity Asset Store.