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What's New in 1.3.1
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New Features
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#. 支持分批料的预先停堆冷却计算；
#. 支持只考虑I、Xe、Pm、Sm衰变的停堆冷却计算；
#. 支持跨步的燃耗跟踪计算；
#. 更新了U-234、U-236的计算公式；

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Bug Fixes
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#. ea50033: index error when number of reference state points more than result state points
#. 2b23b18: typo error caused by debuging
#. 4ce797b: do not plot comparation statistics if deviations is None
#. 20fb4b3: detector activities should be re-normalized if NS exists for statistics
#. dacc6b9: not in not supportted for pandas df
#. 955e23b: variable error when comparing openmc results
#. 23336df: critical boron not updated for depletion cases
#. 4e751e6: reference_file not None error
#. ebd26b8: getting state index by burnup or efpd should search DEP cases
#. bea5919: inverse temperature coefficient calculation
#. 65a6869: TFLUX unheat bug, and spdlog format error
#. f16a2c7: result summary cache error when comparing two results
#. 2a00f5f: output_types empty error in non-depletion cases
#. e2aa382: spline line begin and end point should be the the bottom and top of data regions