Add info to CHANGELOG for #180: UnusedPrivateMethodRule
Add info to CHANGELOG for #180: UnusedPrivateMethodRule

CodeNarc/CodeNarc,CodeNarc/CodeNarc,erdi/CodeNarc,darxriggs/CodeNarc,darxriggs/CodeNarc,erdi/CodeNarc,erdi/CodeNarc,erdi/CodeNarc