Make yamlschema publishable

projects/yamlschema/BUILD

@@ -1,10 +1,8 @@
 py_library(
     name="yamlschema",
-    srcs=[
-        "yamlschema.py",
-    ],
+    srcs=glob(["src/python/**/*.py"]),
     imports=[
-        ".",
+        "src/python",
     ],
     deps=[
         py_requirement("PyYAML"),
@@ -13,7 +11,7 @@ py_library(
 
 py_pytest(
     name="test_yamlschema",
-    srcs=glob(["test_*.py"]),
+    srcs=glob(["test/python/test_*.py"]),
     data=glob(["*.json", "*.yaml"]),
     deps=[
         ":yamlschema",