v0.7: Big WiFi release.

Major changes:
* Select the WiFi channel with the least networks.
* Double the CPU speed to 160MHz.
* Drop unnecessary blocking after LED write.
* Fix some glitches in the twinkle effect.
* Add a lot of documentation.

v0.6: Burning Bär Release.

Mayor changes:
* The userinterface is now more descriptive what the settings mean.
* The AppBar with the save button is now always visible
* Effects can now be removed
* Effects can now be added
* Effects can operate on a channel as one whole strip without dividing
* New effect: twinkling stars
* The number of LEDs can now be set from 2 to 100
* Documentation is growing
* The visibility of the dot effect works now with other values than 100%

v0.5: First public release.

Signed-off-by: Jan Losinski <losinski@wh2.tu-dresden.de>