changelog:
-Bug Fixes
Fixed value for ansi.Bg.YELLOW.
Fixed unit tests for ansi.allow_style.
-Enhancements
async_alert() raises a RuntimeError if called from the main thread.
Signed-off-by: Xu Huan <xuhuan.fnst@fujitsu.com>
Signed-off-by: Khem Raj <raj.khem@gmail.com>
Signed-off-by: Trevor Gamblin <tvgamblin@gmail.com>
