Here is the list of all changes that were made in whole existence of New Better Textures Resource Pack Dragon Egg Plugin (NBTpack Dragon Egg)

==========================================================================

Ver. 1.0
Released for: v1.5.13
Compatible since NBTpack: v1.5.13

Entities:
+Enderman - reimagined, based on Needin Pack design
+Ender Dragon - reimagined, based on Needin Pack design

Sounds:
+Ender Dragon - added reverb

GUI:
+Background - changed to Purpur Block

==========================================================================

Ver. 1.0.0.1
Released for: v1.5.14
Compatible since NBTpack: v1.5.14

Pack:
Changed format 8 -> 9

==========================================================================

Ver. 1.0.0.2
Released for: v1.5.15
Compatible since NBTpack: v1.5.14

Pack:
Readme - added Modrinth and Instagram links
Changed format 9 -> 12

==========================================================================

Ver. 1.0.0.3
Released for: v1.5.16.1
Compatible since NBTpack: v1.5.14

Pack:
Changed format 12 -> 15

==========================================================================

+ changed something for the first time
- changes removed
+/- changed thing previously removed from the pack changes
* changed after being added