package:test_core v0.6.15

Add --coverage-package flag, which filters the coverage report to specific packages using RegExps.
Require a function definition named main directly in a test suite and provide a more direct error message than a failing compiler output.
Suppress skip reason messages in the compact and failures-only reporters.
Improve fidelity of checks for using ascii characters. Check the SDK reported support on windows, and assume ascii support for all terminals on linux since the SDK reported support is much more narrow.
Fix default coverage filter when running in a workspace package. Default filter now includes all the workspace's package.
Add support for reading test package version within pub workspaces.
Allow analyzer major version 10.

test