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What's New in 1.2.1
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New Features
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#. 增加换料组件布料图的可视化功能；
#. 在再启动文件中增加组件历史数据的保存；
#. 增加输出控制类型的选项以减少计算结果文件的存储；

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Bug Fixes
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#. a997f19: heat and unheated rod order
#. cdf11f5: deivce id only be 0
#. 608f3c6: direct flow bug
#. 7251b3c: incorrect absolute flux normalize factor
#. 476b75b: do not dump fuel assembly number densities for macro xs cases
#. d61f2ea: gpus[0]'s dep_regions may be nullptr
#. 3782cdf: the first statepoint of squence calulation may need rebuilding core
#. 4f3d83e: axial_offset may not zero despite the condition of top and bottom are reflective
#. fc5bfd5: EQUI Xe should not be performed in corrector step
#. a45ff30: incorrect gpu's library using cause unnecessary device-host memory copying
#. 402a94e: power ratio error
#. 397cf20: can not exit iteration if negative boron searched
#. 1c05d00: list index error
#. 7eda170: incorrect size of inlet_temps\mod_temps\fuel_temps
#. ae497ab: intialize cell value array
#. fe9158d: export reflactor cell index wrong