Decision for: Linear, rebase, and pull-request GitHub workflow (#29) (#100)

- [Proposal PR](https://github.com/carbon-language/carbon-lang/pull/29)
- [RFC](https://forums.carbon-lang.dev/t/rfc-use-a-linear-pull-request-github-worflow/53)
- [Decision request](https://forums.carbon-lang.dev/t/request-for-decision-proposal-for-an-explicit-github-workflow-29/78)
- [Decision announcement](https://forums.carbon-lang.dev/t/accepted-linear-rebase-and-pull-request-github-workflow/88)

proposals/README.md

@@ -24,6 +24,7 @@ request:
 <!-- This list is updated by src/scripts/pre-commit-proposal-list.py. -->
 
 - [0029 - Linear, rebase, and pull-request GitHub workflow](p0029.md)
+  - [Decision](p0029-decision.md)
 - [0044 - Proposal tracking](p0044.md)
   - [Decision](p0044-decision.md)
 - [0074 - Change comment/decision timelines in proposal process](p0074.md)

proposals/p0029-decision.md

@@ -0,0 +1,32 @@
+# Decision for: Linear, rebase, and pull-request GitHub workflow
+
+<!--
+Part of the Carbon Language project, under the Apache License v2.0 with LLVM
+Exceptions. See /LICENSE for license information.
+SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+-->
+
+Proposal accepted on 2020-06-30
+
+Affirming:
+
+- [austern](https://github.com/austern)
+- [chandlerc](https://github.com/chandlerc)
+- [geoffromer](https://github.com/geoffromer)
+- [josh11b](https://github.com/josh11b)
+- [zygoloid](https://github.com/zygoloid)
+
+Abstaining:
+
+- [gribozavr](https://github.com/gribozavr)
+- [noncombatant](https://github.com/noncombatant)
+- [tituswinters](https://github.com/tituswinters)
+
+## Rationale
+
+- Easy to follow single source of truth will help foster an open and inclusive
+  community.
+- Review requirements and focus on small, incremental changes match well
+  established engineering practices for ensuring the project and codebase scale
+  up both in size and time dimensions.
+- Linear history seems easier for humans to reason about.