v3.3.0-RC3

Fix

(#1408) Make Counter emit valid FIRRTL

Feature

(#1394) Scalasteward scalatest 3.1.0
(#1397) Mux1H: note results unspecified unless exactly one select signal is high
(#1402) expose typeEquivalent
(#1414) Add tests for async reset regs of non-UInt types
(#1417) Revert "Make uselessly public fields in utils private"