+ add `()` to those empty argument list function call;
Auto-application to `()` is deprecated. Supply the empty argument list `()` explicitly to invoke method

+ replace `.U(i)` with `.U.extract(i)`

+ add `case _` to make match be exhaustive

Remove SFC

fix compile for chisel3.6

- remove experimental.IO chipsalliance/chisel#2863
- remove bracket for fire()
- remove Chisel compatibility mode

Fix TLJbarTest

Make CreditedIO more usable

Make AsyncQueue use Rawmodule

Fix TL unittests

Fixes for unit-tests

Add support for an unsynthesizable ROB to produce a TracedInstruction stream with wdata

Fix TLSourceShrinker

Support custom bundles in Trace

Update debug_rom source to use CSR_DSCRATCH0