Split tokenizer into separate file, plus fix no_std feature.

src/any.rs

@@ -10,9 +10,12 @@ use crate::stdlib::{
     any::{type_name, Any, TypeId},
     boxed::Box,
     fmt,
-    time::Instant,
+    string::String,
 };
 
+#[cfg(not(feature = "no_std"))]
+use crate::stdlib::time::Instant;
+
 /// A trait to represent any type.
 ///
 /// Currently, `Variant` is not `Send` nor `Sync`, so it can practically be any type.
@@ -186,6 +189,7 @@ impl Dynamic {
             Union::Array(_) => "array",
             Union::Map(_) => "map",
 
+            #[cfg(not(feature = "no_std"))]
             Union::Variant(value) if value.is::<Instant>() => "timestamp",
             Union::Variant(value) => (**value).type_name(),
         }