Bump 1.8.0-rc1

Signed-off-by: Joffrey F <joffrey@docker.com>

CHANGELOG.md

@@ -1,6 +1,56 @@
 Change log
 ==========
 
+1.8.0 (2016-06-14)
+-----------------
+
+New Features
+
+- Added `docker-compose bundle`, a command that builds a bundle file
+  to be consumed by the new *Docker Stack* commands in Docker 1.12.
+  This command automatically pushes and pulls images as needed.
+
+- Added `docker-compose push`, a command that pushes service images
+  to a registry.
+
+- As announced in 1.7.0, `docker-compose rm` now removes containers
+  created by `docker-compose run` by default.
+
+- Compose now supports specifying a custom TLS version for
+  interaction with the Docker Engine using the `COMPOSE_TLS_VERSION`
+  environment variable.
+
+Bug Fixes
+
+- Fixed a bug where Compose would erroneously try to read `.env`
+  at the project's root when it is a directory.
+
+- Improved config merging when multiple compose files are involved
+  for several service sub-keys.
+
+- Fixed a bug where volume mappings containing Windows drives would
+  sometimes be parsed incorrectly.
+
+- Fixed a bug in Windows environment where volume mappings of the
+  host's root directory would be parsed incorrectly.
+
+- Fixed a bug where `docker-compose config` would ouput an invalid
+  Compose file if external networks were specified.
+
+- Fixed an issue where unset buildargs would be assigned a string
+  containing `'None'` instead of the expected empty value.
+
+- Fixed a bug where yes/no prompts on Windows would not show before
+  receiving input.
+
+- Fixed a bug where trying to `docker-compose exec` on Windows
+  without the `-d` option would exit with a stacktrace. This will
+  still fail for the time being, but should do so gracefully.
+
+- Fixed a bug where errors during `docker-compose up` would show
+  an unrelated stacktrace at the end of the process.
+
+
 1.7.1 (2016-05-04)
 -----------------