Add mutable estimator::history() method.

Author: evoskuil

include/bitcoin/server/estimator.hpp

@@ -129,6 +129,7 @@ class BCS_API estimator
         return std::pow(decay_rate(), push ? +1.0 : -1.0);
     }
 
+    accumulator& history() NOEXCEPT;
     const accumulator& history() const NOEXCEPT;
     bool initialize(const rate_sets& blocks) NOEXCEPT;
     bool push(const rates& block) NOEXCEPT;

src/estimator.cpp

@@ -128,6 +128,11 @@ size_t estimator::top_height() const NOEXCEPT
 // protected
 // ----------------------------------------------------------------------------
 
+estimator::accumulator& estimator::history() NOEXCEPT
+{
+    return fees_;
+}
+
 const estimator::accumulator& estimator::history() const NOEXCEPT
 {
     return fees_;