Added changelog per icon pack

Author: maltaisn

README.md

@@ -52,7 +52,7 @@ to translate (in my experience). A collection of images with the icons for each
 [here][default-pack-label-images] to help with translation.
 
 ## Changelog
-View [changelog][changelog] for release notes.
+View [changelog][changelog] for the library release notes. Each icon pack module also have their own changelog.
 
 ## Licenses
 - Library core is licensed under Apache License 2.0

iconpacks/iconpack-default/CHANGELOG.md

@@ -0,0 +1,4 @@
+## v1.0.0
+- **Initial release**
+- Contains the same icons and tags that were previously shipped with
+the icon dialog library.

iconpacks/iconpack-fa/CHANGELOG.md

@@ -0,0 +1,4 @@
+## v5.12.0
+- **Initial release**
+- Contains the same icons as Font Awesome 5.12.0, but only
+the solid variant, and excluding all `font-awesome-*` icons.

iconpacks/iconpack-mdi/CHANGELOG.md

@@ -0,0 +1,4 @@
+## v5.12.0
+- **Initial release**
+- Contains the same icons as Community Material Design
+Icons v4.6.95, minus brands and outline icons.