Update the release policy (#63)
Update the release policy (#63)

* Set the release window to 2 weeks
* Add the target date at the beginning of the month
* Change the numbering scheme
* Add post-mortem conditions

bazelbuild/bazel-website,davidzchen/bazel-website,davidzchen/bazel-website,davidzchen/bazel-website,davidzchen/bazel-website,bazelbuild/bazel-website,bazelbuild/bazel-website