General cleanup for the docs

src/types.rs

@@ -58,6 +58,34 @@ impl AsRef<[u8]> for ScriptType {
     }
 }
 
+#[derive(Debug, Copy, Clone, PartialEq, PartialOrd)]
+// Internally stored as satoshi/vbyte
+pub struct FeeRate(f32);
+
+impl FeeRate {
+    pub fn from_btc_per_kvb(btc_per_kvb: f32) -> Self {
+        FeeRate(btc_per_kvb * 1e5)
+    }
+
+    pub fn from_sat_per_vb(sat_per_vb: f32) -> Self {
+        FeeRate(sat_per_vb)
+    }
+
+    pub fn default_min_relay_fee() -> Self {
+        FeeRate(1.0)
+    }
+
+    pub fn as_sat_vb(&self) -> f32 {
+        self.0
+    }
+}
+
+impl std::default::Default for FeeRate {
+    fn default() -> Self {
+        FeeRate::default_min_relay_fee()
+    }
+}
+
 #[derive(Serialize, Deserialize, Debug, Clone, PartialEq, Eq)]
 pub struct UTXO {
     pub outpoint: OutPoint,