Moved ParametersContext to its own file.

src/parser/mod.rs

@@ -6,6 +6,7 @@ pub use parser::template;
 pub use parser::Body;
 pub use parser::DustTag;
 pub use parser::Filter;
+pub use parser::KVPair;
 pub use parser::RValue;
 pub use parser::Special;
 pub use parser::Template;

src/parser/parser.rs

@@ -125,9 +125,9 @@ pub enum RValue<'a> {
 }
 
 #[derive(Clone, Debug, PartialEq)]
-struct KVPair<'a> {
-    key: &'a str,
-    value: RValue<'a>,
+pub struct KVPair<'a> {
+    pub key: &'a str,
+    pub value: RValue<'a>,
 }
 
 #[derive(Clone, Debug, PartialEq)]