doc: Add CHANGELOG and UPGRADING docs

The CHANGELOG document should describe the high level changes of the
project. This will provide a human-readable way for people to evaluate
the changes in each release. This file is based on the templates and
general changelog "ethos" provided by 'Keep a CHANGELOG':

    http://keepachangelog.com/

The UPGRADING document provide instruction for system admininstrators
managing patchwork deployments. At the moment, this document is a
rename and minor reformatting of the existing 'docs/NEWS' document, but
going forward documentation will be added for each new release.

Signed-off-by: Stephen Finucane <stephen.finucane@intel.com>

1 files changed, 58 insertions, 0 deletions

diff --git a/CHANGELOG.md b/CHANGELOG.md
new file mode 100644
index 0000000..541df38
--- /dev/null
+++ b/CHANGELOG.md
@@ -0,0 +1,58 @@
+# Change Log
+
+All notable changes to this project will be documented in this file. Please
+refer to the release notes for more detailed information, e.g. how to upgrade.
+
+This project adheres to [Semantic Versioning](http://semver.org/).
+
+## [Unreleased]
+
+...
+
+## [1.0.0] - 2015-10-26
+
+### Added
+
+- Patch tag infrastructure feature. This provide a quick summary of patch
+  'tags' (e.g. `Acked-by`, `Reviewed-by`, ...) found in a patch and its replies
+- Support for Django 1.7 and Django 1.8
+- Support for Django Migrations. This will be the chosen method of making
+  database changes going forward. See below for more information
+- Support for tox
+- Django management commands, which replace the existing patchwork cron scripts
+- CHANGELOG.md and UPGRADING.md docs
+
+### Changed
+
+- Static files are now gather and served using the `django.contrib.staticfiles`
+  module, per Django best practices
+- Restructured directory per modern Django standards. The `apps` directory no
+  longer exists and patchwork source has instead been moved to the top level
+  directory
+- Rewrote documentation to reflect changes in development and deployment best
+  practices over the past few years
+- Reworked `requirements.txt` and `settings.py` files
+
+### Removed
+
+- Support for Django 1.5
+- Defunct Python 2.5 code
+- Numerous dead files/code
+- `bin/patchwork-cron` script, in favor of `cron` management command
+
+### Deprecated
+
+- Django 1.6 support will be removed in the next release
+- Django 1.7 supports Django Migrations and Django 1.8 requires them. This
+  negates the need for handwritten SQL migration scripts. Future releases will
+  no longer include these scripts and they will eventually be removed
+
+## [0.9.0] - 2015-03-22
+
+**NOTE:** 1.0.0 was the first release of patchwork adopting semantic versioning.
+For information on *"0.9.0"* and before, please refer to Git logs.
+
+[Unreleased]: https://github.com/getpatchwork/patchwork/compare/v1.0.0...HEAD
+[1.0.0]: https://github.com/getpatchwork/patchwork/compare/v0.9.0...v1.0.0
+[0.9.0]: https://github.com/getpatchwork/patchwork/compare/c561ebe...v0.9.0
+