<p>The commit includes changes for replacement of timers code with std::chrono library of C++11. Instead of 2 maps, we now use 3 maps. The extra map stores the starting time_point of the timer and rest the timers map stores the duration of microseconds elapsed in the timer. Since, this works cross-platform, the unnecessary codes have been removed.</p>

<hr>

<h4>You can view, comment on, or merge this pull request online at:</h4>
<p>&nbsp;&nbsp;<a href='https://github.com/mlpack/mlpack/pull/567'>https://github.com/mlpack/mlpack/pull/567</a></p>

<h4>Commit Summary</h4>
<ul>
  <li>Changes to solve issue #498: Replacing timer implementation</li>
</ul>

<h4>File Changes</h4>
<ul>
  <li>
    <strong>M</strong>
    <a href="https://github.com/mlpack/mlpack/pull/567/files#diff-0">src/mlpack/core/util/cli.cpp</a>
    (4)
  </li>
  <li>
    <strong>M</strong>
    <a href="https://github.com/mlpack/mlpack/pull/567/files#diff-1">src/mlpack/core/util/timers.cpp</a>
    (169)
  </li>
  <li>
    <strong>M</strong>
    <a href="https://github.com/mlpack/mlpack/pull/567/files#diff-2">src/mlpack/core/util/timers.hpp</a>
    (57)
  </li>
  <li>
    <strong>M</strong>
    <a href="https://github.com/mlpack/mlpack/pull/567/files#diff-3">src/mlpack/tests/cli_test.cpp</a>
    (8)
  </li>
</ul>

<h4>Patch Links:</h4>
<ul>
  <li><a href='https://github.com/mlpack/mlpack/pull/567.patch'>https://github.com/mlpack/mlpack/pull/567.patch</a></li>
  <li><a href='https://github.com/mlpack/mlpack/pull/567.diff'>https://github.com/mlpack/mlpack/pull/567.diff</a></li>
</ul>

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