Make the renderer a bit more generic.

src/render/renderer_integration.rs

@@ -1,15 +1,16 @@
-use std::path::Path;
 use std::path::PathBuf;
 
+use serde::Serialize;
+
 use crate::error::CustomError;
 
-pub trait RendererIntegration {
+pub(crate) trait RendererIntegration {
     fn load_templates<I, P>(&mut self, dust_templates: I) -> Result<(), CustomError>
     where
         I: Iterator<Item = P>,
         P: Into<PathBuf>;
 
-    fn render<P>(&self, context: &str, build_directory: P) -> Result<String, CustomError>
+    fn render<C>(&self, context: C) -> Result<String, crate::error::CustomError>
     where
-        P: AsRef<Path>;
+        C: Serialize;
 }