Explicit check for safe_yaml, load YAML with default security settings
if it is installed, and silence stderr warnings.
Bump to version 2.0.2.
Added signature for changeset e53b53d65079
Added tag v2.0.2 for changeset b8b7c6673cde
Convert specs to use expect syntax

--HG--
rename : spec/lib/helpers.rb => spec/helpers.rb
Fix behavior of inherited Configurability
Bump minor version; update deps, manifest, and history.
Added signature for changeset d27195f9c3df
Added tag v2.1.0 for changeset 4070014e656c