Telegram's changelog:
http://telegram.org/blog/notifications-bots
exteraGram's changelog:
1cf82cb: Minor fixes
4a22bb3: Update files
2332d74: Add "to beginning"
4461c04: Add mark as read to folders
220a45d: Fix view stats
7712235: Use JDK8 instead of JDK7 for kotlin-stdlib
c8bbf08: Add "Subscribe to channel" suggestion
b199269: Deletion of the reference to lead dev
683d80f: Update google-services.json
4f6c2df: Revert "Add "Subscribe to channel" suggestion"
ade1a92: Return Force Tablet Mode
a2fb737: Reduce the delay for menu in Sticker Preview
3f98247: Add Copy Button in Translator
79f0b42: Fix dividers in Profile
4d75d95: Fix bugs caused by Arrow Icon
f41de48: LikeButton improvements
e3ea1fe: Some Preferences improvements
1a00931: Monet Improvements
1138295: Add option to center Title in Action Bar
7ed84d2: Replace EditText with OutlineContainer
f686385: Add option to enable alternative Switch style
4b021e0: Minor fixes