Fix to 1.0.1 - add missing .bzl files (#201)

diff --git a/BUILD b/BUILD
index 385f0fe..8ae601d 100644
--- a/BUILD
+++ b/BUILD
@@ -61,5 +61,7 @@
         "CONTRIBUTORS",
         "//lib:distribution",
         "//rules:distribution",
+        "//rules/private:distribution",
+        "//toolchains/unittest:distribution",
     ] + glob(["*.bzl"]),
 )
diff --git a/rules/BUILD b/rules/BUILD
index a977212..fac17b0 100644
--- a/rules/BUILD
+++ b/rules/BUILD
@@ -63,6 +63,5 @@
     srcs = glob(["*"]),
     visibility = [
         "//:__pkg__",
-        "//distribution:__pkg__",
     ],
 )
diff --git a/rules/private/BUILD b/rules/private/BUILD
index 4a1e281..f835fb4 100644
--- a/rules/private/BUILD
+++ b/rules/private/BUILD
@@ -18,3 +18,12 @@
     name = "maprule_util",
     srcs = ["maprule_util.bzl"],
 )
+
+# The files needed for distribution
+filegroup(
+    name = "distribution",
+    srcs = glob(["*"]),
+    visibility = [
+        "//:__subpackages__",
+    ],
+)
diff --git a/toolchains/unittest/BUILD b/toolchains/unittest/BUILD
index cf436a4..f549d74 100644
--- a/toolchains/unittest/BUILD
+++ b/toolchains/unittest/BUILD
@@ -56,3 +56,12 @@
     ],
     visibility = ["//:__subpackages__"],
 )
+
+# The files needed for distribution
+filegroup(
+    name = "distribution",
+    srcs = ["BUILD"],
+    visibility = [
+        "//:__pkg__",
+    ],
+)
diff --git a/version.bzl b/version.bzl
index de87db0..b96b498 100644
--- a/version.bzl
+++ b/version.bzl
@@ -13,4 +13,4 @@
 # limitations under the License.
 """The version of bazel-skylib."""
 
-version = "1.0.0"
+version = "1.0.1"