EIP-168, 169: Dust protection (#4757)

* Dust protection

* Track touched accounts in the substate

* Minor alterations

json/src/spec/params.rs

@@ -81,6 +81,14 @@ pub struct Params {
 	/// See `CommonParams` docs.
 	#[serde(rename="eip214Transition")]
 	pub eip214_transition: Option<Uint>,
+	/// See `CommonParams` docs.
+	#[serde(rename="dustProtectionTransition")]
+	pub dust_protection_transition: Option<Uint>,
+	/// See `CommonParams` docs.
+	#[serde(rename="nonceCapIncrement")]
+	pub nonce_cap_increment: Option<Uint>,
+	/// See `CommonParams` docs.
+	pub remove_dust_contracts : Option<bool>,
 }
 
 #[cfg(test)]