Merge branch 'gringene' into 'master'

Gringene clocks

Two alternative clocks for telling time:
 * The colour clock uses a standard display, but modifies the hands so that they change as they rotate around the clock face
 * The concentric clock uses growing concentric arcs to indicate the passage of time

Please let me know about any errors and/or things that I can change (including things in the apps themselves) to make this process better.

See merge request !189

metadata/org.gringene.colourclock.txt

@@ -0,0 +1,35 @@
+Categories:Office,Science & Education
+License:ISC
+
+Web Site:http://www.gringene.org/pastimes.html
+Source Code:https://github.com/gringer/ColourClock
+Issue Tracker:https://github.com/gringer/ColourClock/issues
+
+Summary:Tell the time using colours
+Description:
+Tell the time with colours that change as they rotate round the clock
+face. Blobs at the end of the hour, minute, and second regions change
+colours over time (red = 12, yellow = 3, green = 6, blue = 9).
+
+This might help younger children to tell the time without having to
+know what numbers mean (e.g. it's yellow and orange).
+
+A sine-wave second "tick" has also been implemented, as well as fixing
+the minute hand to integer positions. This makes the clock a bit more
+interesting, because each hand tells the time in a different way.
+
+Other apps by this developer: [[org.gringene.concentricclock]]
+.
+
+Repo Type:git
+Repo:https://github.com/gringer/ColourClock.git
+
+Build:1.1,2
+     commit=222fe9b5596ad6608e4b3abb6279c0b1cb99656c
+     gradle=yes
+     subdir=app
+
+Auto Update Mode:None
+Update Check Mode:RepoManifest
+Current Version:1.1
+Current Version Code:2

metadata/org.gringene.concentricclock.txt

@@ -0,0 +1,29 @@
+Categories:Office,Science & Education
+License:ISC
+
+Web Site:http://www.gringene.org/pastimes.html
+Source Code:https://github.com/gringer/ConcentricClock
+Issue Tracker:https://github.com/gringer/ConcentricClock/issues
+
+Summary:Tell the time using concentric arcs
+Description:
+This is a clock that uses spinning and growing concentric arcs to tell
+the time, and demonstrates in a dynamic way the factors of 60. The
+minute hand is suggested by the start and end positions of the arcs,
+while the hour of day is shown by the size of the outer arc.
+
+Other apps by this developer: [[org.gringene.colourclock]]
+.
+
+Repo Type:git
+Repo:https://github.com/gringer/ConcentricClock.git
+
+Build:1.1,2
+     commit=edf5d2cc394ead0be312973a20b043d011376705
+     gradle=yes
+     subdir=app
+
+Auto Update Mode:None
+Update Check Mode:RepoManifest
+Current Version:1.1
+Current Version Code:2