Add method to get info about b-field params

Author: Roderick Bovee

src/bfield.rs

@@ -160,6 +160,12 @@ impl<'a, T: Clone + DeserializeOwned + Serialize> BField<T> {
         // or return a Result<Option<BFieldVal>, ...> instead?
         None
     }
+
+    pub fn info(&self) -> Vec<(usize, u8, u8, u8)> {
+        self.members.iter().map(|m| {
+            m.info()
+        }).collect()
+    }
 }
 
 #[cfg(feature = "legacy")]

src/bfield_member.rs

@@ -200,6 +200,10 @@ impl<T: Clone + DeserializeOwned + Serialize> BFieldMember<T> {
         }
         align_bits(merged_marker, marker_width)
     }
+
+    pub fn info(&self) -> (usize, u8, u8, u8) {
+        (self.bitvec.size(), self.params.n_hashes, self.params.marker_width, self.params.n_marker_bits)
+    }
 }
 
 #[cfg(not(feature = "legacy"))]