Replace the short video with an animated vector image that shows the
swipe gesture.
This is much lighter and reliable than the mp4 video, which failed to
play on many devices.
Source for the image of the key is in inkscape SVG format in srcs/res
and is converted to an android drawable when needed. The swipe animation
is hand-written.
- Removing unused information (names and descriptions) from the Emoji class
- Creating a Gradle task that generates a more efficient res/raw/emojis.txt file from the most recent Unicode standard
- Saving recently used emoji preferences as emoji values rather than names
- Migrating old user preferences to the new system
