Simple Chess Clock: switch to a fork

Switch to a fork blessed by the original author; update to 2.1.0 (10);
enable AUM.

Closes fdroid/fdroiddata#1577.

metadata/com.chessclock.android.txt

@@ -1,27 +1,31 @@
 Categories:Games
 License:GPL-3.0-only
 Web Site:
-Source Code:https://github.com/eldarerathis/Simple-Chess-Clock
-Issue Tracker:https://github.com/eldarerathis/Simple-Chess-Clock/issues
+Source Code:https://github.com/simenheg/simple-chess-clock
+Issue Tracker:https://github.com/simenheg/simple-chess-clock/issues
+Changelog:https://github.com/simenheg/simple-chess-clock#changelog
 
 Auto Name:Simple Chess Clock
 Summary:Two touchable chess timers
 Description:
-Simple Chess Clock does what it says! It is designed for touchscreen Android
-devices, and provides a simple, clear interface and easy interaction.
-
-'''Note:''' Development of this app has been discontinued.
+Simple Chess Clock is what its name implies: a chess clock (that’s simple!). It
+aims to be easy to use and easy to read, while also providing some reasonably
+expected features.
 .
 
 Repo Type:git
-Repo:https://github.com/eldarerathis/Simple-Chess-Clock
+Repo:https://github.com/simenheg/simple-chess-clock
 
 Build:1.2.0,8
     commit=379155447bff
     subdir=simplechessclock
     target=android-8
 
-Auto Update Mode:None
-Update Check Mode:None
-Current Version:1.2.0
-Current Version Code:8
+Build:2.1.0,10
+    commit=v2.1.0
+    target=android-23
+
+Auto Update Mode:Version v%v
+Update Check Mode:Tags
+Current Version:2.1.0
+Current Version Code:10