The `kotlin_repositories` macro is designed to download the third
party dependencies that rules_kotlin has for itself. Because of the
way that Bazel works, these must first be downloaded before they can
be referred to by build files.

If a user has chosen to enable linting, `rules_kotlin` will now
generate ktlint tests automatically. These can be run with a `bazel
test --test_tag_filters=lint //...`

Stardoc doesn't allow a macro to wrap a rule and also have the rule's
documentation be generated.

Ideally, we'd simply exclude the lint wrappers and omit the `input`
attribute from the `stardoc` target. However, thanks to [an issue with
stardoc](bazelbuild/stardoc#99) this is not
an option. As an alternative, we provide a verion of `rules.bzl` that
deliberately excludes the lint wrappers.