v0.20.0
Bump version to 0.20.0 (#390) * Bump version to 0.20.0 Signed-off-by: Wu Yu Wei <yuweiwu@pm.me> * Revert rand back to 0.8 Signed-off-by: Wu Yu Wei <yuweiwu@pm.me> * Revert rand version change Signed-off-by: Wu Yu Wei <yuweiwu@pm.me> --------- Signed-off-by: Wu Yu Wei <yuweiwu@pm.me>