chore(changelog): update changelog for v1.0.0-rc.543

Note: **Actually** release . (This was meant to be done on my side, but I forgot about it...)

CHANGELOG.md

@@ -1,6 +1,12 @@
 <a name="1.0.0-rc.543"></a>
-# [1.0.0-rc.543](https://github.com/Chan4077/StudyBuddy/compare/v1.0.0-rc.503...v1.0.0-rc.543) (2018-04-23)
+# [1.0.0-rc.543 application-presence](https://github.com/Chan4077/StudyBuddy/compare/v1.0.0-rc.503...v1.0.0-rc.543) (2018-04-23)
 
+## Highlights
+
+- Added initial support for FCM! The following working features are:
+  - Notification channel
+  - Notification body + title
+  - Notification actions
 
 ### Bug Fixes
 
@@ -23,7 +29,16 @@
 
 
 <a name="1.0.0-rc.503"></a>
-# [1.0.0-rc.503](https://github.com/Chan4077/StudyBuddy/compare/v1.0.0-beta.795...v1.0.0-rc.503) (2018-03-21)
+# [1.0.0-rc.503 buyer-hotel](https://github.com/Chan4077/StudyBuddy/compare/v1.0.0-beta.795...v1.0.0-rc.503) (2018-03-21)
+
+## Highlights
+
+- Added adaptive icon support for shortcuts on devices running API `26` and later! You can view the commit 
+[here](https://github.com/Chan4077/StudyBuddy/commit/d963121bbcdd9b78f237fff39689cab5f05c0510).
+- Notification settings are now different where its based on whether you are running the app on a device running API `25` and older, or `26` and later.
+
+  This means that devices running Android Oreo will see settings which will take users to the specific notification category in the system Settings app where users can 
+configure the setting of the notification channel.
 
 
 ### Bug Fixes
@@ -60,6 +75,36 @@
 * add notification settings option ([72776ac](https://github.com/Chan4077/StudyBuddy/commit/72776ac))
 * Bump version [2] ([4ab0436](https://github.com/Chan4077/StudyBuddy/commit/4ab0436))
 
+<a name="1.0.0-rc.023"></a>
+# [1.0.0-rc.023 retiree-facility](https://github.com/Chan4077/StudyBuddy/compare/v1.0.0-beta.795...v1.0.0-rc.023) (2017-12-13)
+
+## Highlights
+- Finally! After a few months, the app icon for this app has officially changed! You can view the commit for it 
+[here](https://github.com/Chan4077/StudyBuddy/commit/829dfdbbbcae094dee6cabf40b4177a18e274a99).
+- Changed the way the changelog looks like to match Angular's changelog
+- This is the first release candidate for StudyBuddy! :smile: Now that the UI looks cool enough to exit beta (along with the stuff behind), issues are welcome to help me 
+squash some bugs that I haven't noticed before.
+
+### Docs
+- **changelog**: Use new changelog style (you can see it right now!) (similar to Angular's changelog style)
+- **StudyBuddy-builds**: Add new readme
+
+### Features
+- **icons**: Change to new app icon (Feedback welcome, created with [Sketch](https://sketchapp.com)) 
+([`829dfdb`](https://github.com/Chan4077/StudyBuddy/commit/829dfdbbbcae094dee6cabf40b4177a18e274a99))
+- **settings**: Add new toggle to enable/disable calendar (WIP) ([`6650231`](https://github.com/Chan4077/StudyBuddy/commit/66502310f7b8c4a724c899fa9a7aa9bf9ab7a631))
+- **settings**: Show the current app's version ([`8f95dde`](https://github.com/Chan4077/StudyBuddy/commit/8f95dde2bb77c67105fa7027734b7596595c7f28))
+- **settings**: Add a new setting to set the update channel (WIP) ([`1235e57`](https://github.com/Chan4077/StudyBuddy/commit/1235e5729523908836146290957872ee77a8ad69))
+- **layout**: Use side navigation instead of bottom navigation ([`c4da84b`](https://github.com/Chan4077/StudyBuddy/commit/c4da84bb2b8f21ff5a0feaf4013ca84836751125))
+- **settings**: Add help menu item ([`183535a`](https://github.com/Chan4077/StudyBuddy/commit/183535a5977d655a30983d87be8b0a4866fb34dc))
+
+### Bug fixes
+- **settings**: Remove "Enable" prefix ([`ff3d0e8`](https://github.com/Chan4077/StudyBuddy/commit/ff3d0e8b96c837e6f6c6f4ebc79753664b4ed941))
+- **app-intro**: Change activity prefix to use `My` ([`23f1f5e`](https://github.com/Chan4077/StudyBuddy/commit/23f1f5ef93fdabb0fe41b256c611f4f20f81fca1))
+
+### Misc
+- **deps**: Add FirebaseUI to dependencies ([`725fdb1`](https://github.com/Chan4077/StudyBuddy/commit/725fdb1dba0ce795698c1b4515b87ee04ab134d6))
+
 
 
 <a name="1.0.0-beta.795"></a>