Merge branch 'dev_yy' into dev

yanyuan

2023-09-05 b262ab5a8021b0a3b9bb4bab78c52981ac39e35e

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Quintiq file version 2.0
#parent: #root
Attribute HasOptimalSolution
{
  #keys: '3[110880.5.1761948925][110880.5.1761948922][110880.5.1761948926]'
  Description: 'Return true if optimizer returns optimizer solution for the level'
  ValueType: Boolean
}