* Enable CI for 3.5.x branch
* Enable Mergify for 3.5.x branch
* Drop 3.5.x from Mergify

* Add Lookupable for Either
* Lookupable: enhance the @public/@instantiable error message to include traits and Eithers

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

Add scalafmt configuration and apply it.

Command:
sbt scalafmtAll

Can be run in two ways:
* sbt scalaFmtAll
* mill mill.scalalib.scalafmt.ScalafmtModule/reformatAll __.sources

Update mergify queue action

Mergify deprecated and removed strict mode in the merge action. Instead,
we now use the queue action. Using ucb-bar/chisel-repo-tools#38.

Generation script is chisel-repo-tools/scripts/mergify.sc

* New Feature: Add a Select.ios that works with Definition/Instance
* BugFix: isA now truly ignores type parameters

Fix unidoc

This enables skipping files in the compiler plugin, only needed for
unidoc generation.

It is always true. The scalacOption to enable it is still supported and
prints a warning that the option no longer does anything.

This reverts commit 21e32472.

Note that I am keeping the change making Arg sealed.

- Shows groups of field names that share a common id (i.e. aliased)
- Show, as much as possible, them in the order that fields appear in bundle
- Updated BundleSpec's relevant tests

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

BitSet is a new experimental parent type for BitPat.
It enables more complex operations on BitPats.

Co-authored-by: Ocean Shen <shenao6626@gmail.com>

Also clean up deprecation warnings for replacement APIs and add
clarifying ScalaDoc.

This new document is a place to describe issues users may run into when
upgrading from Chisel 3.4 to 3.5. This initial version includes the
solution for the removal of virtual method "val io".

Co-authored-by: Megan Wachs <megan@sifive.com>

This makes the resulting Verilog from decoding a TruthTable deterministic.

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

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

preserves input/output information of the type being reduced.

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

Co-authored-by: Megan Wachs <megan@sifive.com>

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

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

* DataProducts for Seq and Tuple2-10 in DataProduct companion object
* DataViews for Seq and Tuple 2-10 in DataView companion object
* HWTuple2-10 Bundles in chisel3.experimental
* Implicit conversions from Seq to Vec and Tuple to HWTuple in chisel3.experimental.conversions

Remove the body from the emitted Verilog. This was the original intent
of the example, and it avoids an issue where Jekyll was not able to
render the Markdown file due to Verilog concatenation looking like a
variable escape.

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

Provides a more intuitive implementation of toString for Data.
Utilizes the fact that the compiler plugin provides names earlier than
Chisel had in the past so we can accurately guess the name of
signals even in the currently elaborating module.

Co-authored-by: Megan Wachs <megan@sifive.com>
Co-authored-by: Jack Koenig <jack.koenig3@gmail.com>

As the chisel3 compiler plugin is now required, we can delete unused
code for reflective autoclonetype as well as the noPluginTests.

Include plugin in instructions since it will be required in 3.5.
Also make sure the example actually works.