>=2.12.0-0 <3.0.0based on beta release guidelines.
package_resolverand changed the apis to accept a
Map<String, Uri>which maps package names to the base uri to resolve the
package:uris for those packages.
sdkRootargument must be an
Uri.parsefor use cases previously passing a
packageRootargument has been removed.
SyncPackageResolverhas no package information at all.
mapStackTrace() now uses a
SyncPackageResolver object from the
package_resolver package to recreate
packageRoot parameter to
mapStackTrace is deprecated in favor of the
packageInfo parameter described above. It will be removed in a future release.