v4.0.0-rc.1

4.0.0-rc.1 (2026-09-09)

⚠ BREAKING CHANGES

• mibs: pysmi.mibs.behavior() is gone and generated modules no longer
  carry a spliced runtime-behavior tail. Consumers relying on that tail must
  apply their own behavior at load time, as pysnmp now does. PYSNMP-USM-MIB is
  no longer in PySnmpCodeGen.baseMibs, so a StubSearcher built from it no longer
  reports that module as up to date.

Code Refactoring

• mibs: hand MIB runtime behavior back to pysnmp (40c7f22), closes #236 #231 #236