Chisel v3.5.4

Feature

• Add formatted Printable interpolator cf (#2528)
• Implement DecoupledIO.map utility (#2646)
• Add DataMirror isIO, isReg, isWire (#2601)
• Define leading '_' as API for creating temporaries (#2580)
• Implement trait for Chisel compiler to name arbitrary non-Data types (#2610)
• Support separately elaborating definition and instance in ChiselStage (#2512)
• New enhanced API for specifying Chisel to Firrtl Annotations (#2628)
• Add single argument Bits.extract (#2566)

Deprecation

• Deprecate chiselName and NoChiselNamePrefix trait (#2627)
• Deprecate TransitName (#2603)
• Add --warn:reflective-naming (#2561)
• Deprecate implicit .U() and .S() syntax for literal bit extracts (#2534)
• Deprecate accessing the name of non-hardware Data (#2550)
• Deprecate named arguments for methods moving to macros in 3.6 (#2530)

BugFix

• Make explicit copy constructors for ExplicitCompileOptions (#2629)
• Refactor TruthTable.apply and add factory method for Espresso (#2612)
• Handle varargs constructor arguments in Bundle plugin (#2585)
• Support VerificationStatement in the naming plugin (#2555)
• Support Vecs of empty Bundles (#2543)
• Support := views to DontCare (#2536)

Performance

• Micro-optimize BitPat.rawString (#2577)

Docs

• Add an Explanation chapter about Scala types vs Chisel Types vs Hardware (#2626)
• Fix broken link in interfaces-and-connections.md (#2607)
• Publish unidoc as ScalaDoc in chisel project (#2595)
• README: fix link to contributing.md (#2596)
• Make readme friendlier to beginners (#2586)
• [docs] Document partial register reset (#2582)
• Update CONTRIBUTING.md for cleanup process (#2523)

Other

• Update scala-compiler, scala-library, ... to 2.12.16 (#2618)
• CompileOptions: add and use emitStrictConnects (#2622)
• Add ImplicitInvalidate, to help migrate the explicitInvalidate compiler option (#2575)
• Added migration for inferModuleReset (#2571)