Rename private[chisel3] SourceInfo$Intf to SourceInfoIntf (#5033)

This works around an issue in IntelliJ around using the macro to
materialize SourceInfo.

Keep empty SourceInfo$Intf for binary compatibility.

Restore binary compatibility checking (#5028)

Bump emitted FIRRTL version to 6.0.0 (#5008)

Bump emitted FIRRTL version to 6.0.0 (#5008)

Upgrade to Mill 1.0.0 (#4972)

Update release flow to publish directly to Maven Central

Update commons-text to 1.13.1 (#4905)

Support boring on original Module after .toInstance call (backport #4602

) (#4604)

* Support boring on original Module after .toInstance call (#4602)

(cherry picked from commit 4d162c4)

* Add needed private API and change new test to 6.x-style

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Co-authored-by: Jack Koenig <koenig@sifive.com>
Co-authored-by: mergify[bot] <37929162+mergify[bot]@users.noreply.github.com>

Implement Lookupable for Unit (#4497) (#4498)

(cherry picked from commit 48866a9)

Co-authored-by: Jack Koenig <koenig@sifive.com>

Merge pull request #4277 from chipsalliance/cd/update-circt-from-firt…

…ool-1.76.0-to-firtool-1.77.0

[cd] Bump CIRCT from firtool-1.76.0 to firtool-1.77.0