Merge branch '66-isfreight-attribute-only-assigned-to-freight-agents' into 'develop'

Resolve "isFreight attribute only assigned to freight agents"

See merge request !101

CHANGELOG.md

 **3.0.0**
+- Add `isFreight` attribute to all agents in `population.xml`
 - Update python requirements
 - Updated statistical matching to most recent version
 - Duplicate agents after IPU using Truncate-Replicate-Sample method

matsim/population.py

@@ -43,6 +43,7 @@ class PersonWriter:
         writer.add_attribute("statpopHouseholdId", "java.lang.Long", str(self.person[16]))
         writer.add_attribute("mzPersonId", "java.lang.Long", str(self.person[17]))
         writer.add_attribute("mzHeadId", "java.lang.Long", str(self.person[18]))
+        writer.add_attribute("isFreight", "java.lang.Boolean", writer.true_false(False))
 
         writer.end_attributes()