chore: Bump version to 1.0.4 and update changelog for Z-order refinements

Author: fabiocarneiro

CHANGELOG.md

@@ -1,3 +1,8 @@
+## 1.0.4
+
+* Implemented "Deck of Cards" drawing order: larger circles now stay on top of smaller ones during all transitions.
+* Enhanced animation aesthetics, allowing smaller circles to naturally emerge from or hide behind larger ones.
+
 ## 1.0.3
 
 * Perfected symmetry of the implosion (drill-out) animation for a more natural feel.

pubspec.yaml

@@ -1,6 +1,6 @@
 name: flutter_circle_pack_chart
 description: A powerful and interactive circle pack chart (circular treemap) library for Flutter.
-version: 1.0.3
+version: 1.0.4
 homepage: https://fabiocarneiro.github.io/FlutterCirclePackChart/
 repository: https://github.com/fabiocarneiro/FlutterCirclePackChart
 issue_tracker: https://github.com/fabiocarneiro/FlutterCirclePackChart/issues