GravitLauncher v1.2.1

1.2.1 stable runtime for 5.1.5-stable

GravitLauncher v1.2.0

v1.2.0 stable runtime for 5.1.5-stable

v1.1.1-stable runtime for 5.1.4-stable

v1.1.1-stable runtime for 5.1.4-stable

v1.1.0 stable runtime for 5.1.4-stable

v1.1.0 stable runtime for 5.1.4-stablr

v1.0.0 Stable runtime for 5.1.3-stable

Merge branch 'release/1.0.0'