History: P.A. 77-421 deleted reference to court of common pleas, probate court and juvenile court in Subsec. (a); P.A. 77-609 redefined ???meeting??? and ???executive sessions???; P.A. 83-67 amended Subsec. (a) by including any state, municipal or district authority within the meaning of ???agency??? or ???public agency???; P.A. 83-372 included within the definition of ???agency??? or ???public ag