add askama::Error behind feature flag

Cargo.toml

@@ -8,6 +8,7 @@ license = "MIT"
 keywords = ["error", "result"]
 
 [dependencies]
+askama = { version = "0.12", optional = true }
 serde_json = { version = "1.0", optional = true }
 ureq = { version = "2.6", optional = true }
 

src/lib.rs

@@ -63,6 +63,13 @@ impl From<String> for Rear {
 	}
 }
 
+#[cfg(feature = "askama")]
+impl From<askama::Error> for Rear {
+	fn from(error: askama::Error) -> Self {
+		Self { message: error.to_string(), error: error.into() }
+	}
+}
+
 #[cfg(feature = "serde_json")]
 impl From<serde_json::Error> for Rear {
 	fn from(error: serde_json::Error) -> Self {