Create a schema validator once instead of on every request
Create a schema validator once instead of on every request

It's more efficient instead of parsing/validating the schema on every request,
and fails early if the schema definition is malformed.

quiltdata/quilt,quiltdata/quilt-compiler,quiltdata/quilt,quiltdata/quilt,quiltdata/quilt,quiltdata/quilt,quiltdata/quilt-compiler,quiltdata/quilt-compiler,quiltdata/quilt-compiler