make the Governance page readable straight through

Author: SethTisue

_data/governance.yml

@@ -2,8 +2,5 @@
 layout: inner-page-parent
 ---
 
-<!-- Masthead -->
-{% include masthead-governance.html %}
-
 <!-- Main content -->
 {% include inner-page-main-content.html %}

_includes/masthead-governance.html

@@ -10,12 +10,18 @@ includeTOC: true
 Scala was created by [Prof. Martin Odersky](https://lampwww.epfl.ch/~odersky/)
 at [EPFL](https://epfl.ch).
 
-The Scala language and associated websites are cooperative projects of the
-[Scala Center](https://scala.epfl.ch) at [EPFL](https://epfl.ch), the Scala 3
-team in Martin's research group, [LAMP](https://lamp.epfl.ch) (also at EPFL),
-the Scala teams at [Lightbend](https://www.lightbend.com) and
-[VirtusLab](https://virtuslab.com), and the Scala community more broadly, with
-participation from many companies, organizations, and individuals.
+The Scala language and associated websites are cooperative projects of these
+four groups:
+
+* the [Scala Center](https://scala.epfl.ch) at [EPFL](https://epfl.ch)
+* the Scala 3 team in Martin's research group [LAMP](https://lamp.epfl.ch) (also at EPFL)
+* the Scala team at [Lightbend](https://www.lightbend.com)
+* the Scala team at [VirtusLab](https://virtuslab.com)
+
+and the Scala community more broadly, with participation from many
+companies, organizations, and individuals.
+
+## Who does what?
 
 Scala 2 maintenance is primarily handled by the Lightbend team. They also
 participate in Scala 3 development.
@@ -33,3 +39,34 @@ Scala 3 development is done by the compiler team currently listed at
 [Scala Compiler Team](/maintainers/) page and Scala 2 maintainers list is
 located in [the github README](https://github.com/scala/scala#get-in-touch) of
 the scala/scala repository.
+
+For Scala 3, see also the [Development guarantees](/development), which describes
+in detail how the timing and contents of Scala 3 releases are arrived at.
+
+## Scala Improvement Process
+
+The SIP is the primary mechanism for evolving the Scala language.
+
+This process aims to evolve Scala openly and collaboratively. Anyone from the community is welcome to submit a Scala Improvement Proposal (SIP), which is then reviewed and discussed by a Committee. Every month, the Committee votes on the proposals to accept in the language.
+
+For more information:
+
+* [SIP home page](https://docs.scala-lang.org/sips/index.html)
+* [SIP Committee Members](https://docs.scala-lang.org/sips/process-specification.html#the-sip-committee)
+* [SIP Process Specification](https://docs.scala-lang.org/sips/process-specification.html)
+
+## Scala Center
+
+This is the Scala language foundation coordinating Scala governance, community, education, and OSS library/tool development.
+
+The Scala Center contributes to the language core, open source Scala tooling and libraries, and
+delivers high-quality education materials. It fosters conversations in the community and coordinates with various parties to unblock and improve the Scala ecosystem.
+
+Joining the Center's Advisory Board is an effective way to participate in Scala governance, have your voice heard, as well as supporting the Center to achieve its goals.
+
+For more information:
+
+* [Home page](https://scala.epfl.ch/)
+* [Joining the Advisory Board](https://scala.epfl.ch/corporate-membership.html)
+* [5 Year Impact Report](https://scala.epfl.ch/records/first-five-years/)
+* [2024 Roadmap](https://www.scala-lang.org/blog/2024/02/06/scala-center-2024-roadmap.html)