Implement Clone and Debug for all iterators

src/histogram.rs

@@ -156,6 +156,7 @@ macro_rules! define_histogram_common {
  }
 
  /// Iterate over all `(range, count)` pairs in the histogram.
+ #[derive(Debug, Clone)]
  pub struct IterHistogram<'a> {
  remaining_bin: &'a [u64],
  remaining_range: &'a [f64],

src/lib.rs

@@ -94,6 +94,7 @@
 #![no_std]
 #![forbid(unsafe_code)]
 #![forbid(missing_docs)]
+#![forbid(missing_debug_implementations)]
 
 #![cfg_attr(feature = "nightly",
  feature(const_generics, const_evaluatable_checked))]

src/traits.rs

@@ -96,6 +96,7 @@ pub trait Histogram:
 }
 
 /// Iterate over the bins normalized by bin width.
+#[derive(Debug, Clone)]
 pub struct IterNormalized<T>
  where T: Iterator<Item = ((f64, f64), u64)>
 {
@@ -114,6 +115,7 @@ impl<T> Iterator for IterNormalized<T>
 }
 
 /// Iterate over the widths of the bins.
+#[derive(Debug, Clone)]
 pub struct IterWidths<T>
  where T: Iterator<Item = ((f64, f64), u64)>
 {
@@ -132,6 +134,7 @@ impl<T> Iterator for IterWidths<T>
 }
 
 /// Iterate over the bin centers.
+#[derive(Debug, Clone)]
 pub struct IterBinCenters<T>
  where T: Iterator<Item = ((f64, f64), u64)>
 {
@@ -150,6 +153,7 @@ impl<T> Iterator for IterBinCenters<T>
 }
 
 /// Iterate over the variances.
+#[derive(Debug, Clone)]
 pub struct IterVariances<T>
  where T: Iterator<Item = ((f64, f64), u64)>
 {