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

Fix emitted FIRRTL for dynamic index of size 0 Vec (#4275) (#4276)

This is currently a warning but not yet an error so we need to emit
legal FIRRTL.

(cherry picked from commit d5ccf48)

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

Debump to chiseltest 0.6.1

chiseltest 0.6.2 is not published for Scala 2.12.

Add and use Mill wrapper script (backport #4119) (#4125)

* Add and use Mill wrapper script (#4119)

This saves developers from having to install a dependency. It also
allows us to drop an old Github Actions dependency that hasn't been
updated in 2 years. This is the standard practice for projects using
Mill on Github.

(cherry picked from commit 0f2efb5)

# Conflicts:
#	.github/workflows/test.yml
#	CONTRIBUTING.md
#	benchmark/src/main/scala/chisel3/benchmark/Benchmark.scala

* Resolve backport conflicts

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

Add and use Mill wrapper script (backport #4119) (#4124)

* Add and use Mill wrapper script (#4119)

This saves developers from having to install a dependency. It also
allows us to drop an old Github Actions dependency that hasn't been
updated in 2 years. This is the standard practice for projects using
Mill on Github.

(cherry picked from commit 0f2efb5)

# Conflicts:
#	.github/workflows/test.yml
#	CONTRIBUTING.md
#	benchmark/src/main/scala/chisel3/benchmark/Benchmark.scala

* Resolve backport conflicts

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