MacroCompiler needs more specific firrtl.Utils imports, Comment out legalize
SynFlops more precise imports
YamlHelpers use FileUtils
ResetInverter LegacyModule => Module
Retime use Module instead of LegacyModule
YamlHelpers uses FileUtils instead of getResource
ResetInvert use Module instead of LegacyModule
Masks add scalatest wrappers for getting better test reports
SpecificExamples drop tapeout prefix, and add scalatest blocks
GenerateSpec, let ChiselStage emit the firrt directly to target dir, add some actual tests that files were created
GenerateTopSpec use FileUtils
FlipChipMacroSpec use FileUtils
IOPropertiesSpec use FileUtils
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