Migrating from jcenter to MavenCentral

Bugfixes

• fixed manifest merge issue.

Feature

Support invoked from sub-thred.

ToastUtil.postShow("ToastUtil");

Warning

Sorry, because of my domain name changed, the package name changed from com.gujin.toastutil to tech.gujin.toastutil.
Please re-import if it cause error after upgrade.

Bugfixes

• fixed an issue where durationLong param is invalid.
• fixed an RuntimeException in show().