Release 0.7.0 (#521)

I bumped ampereVersion from 0.6.0 to 0.7.0 in gradle.properties to cut
the next minor release, following the 0.4.0 → 0.5.0 → 0.6.0 cadence.

Co-authored-by: Miley Chandonnet <miley@Mileys-Mac-mini.local>

Author: wow-miley

gradle.properties

@@ -26,4 +26,4 @@ sqldelight.version=2.2.1
 mosaic.version=0.18.0
 
 #Ampere
-ampereVersion=0.6.0
+ampereVersion=0.7.0