update CHANGELOG.markdown

msakai · Mar 23, 2024 · 54e5e70 · 54e5e70
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 0.2.0.0
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-* allow parsing maximization problem as specified in
+* Support some features described in “General OPB Format”
   https://www.cril.univ-artois.fr/PB24/OPBgeneral.pdf
+  * allow both min and max keywords in the objective function
+  * allow any usual relational operator in constraints
+  * allow to use Unicode characters and the UTF-8 encoding for relational operators
 
 0.1.11.0
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