The strong yet conservative changes to the alphabet first appeared in the 1993 alphabet and was slightly tweaked in the 1996 revision.
Suprasegmental is a term leased to natural intonations, pauses and shifts that are hard to document otherwise. The IPA tried to address how to best note these issues at the Kiel Convention, but the problem has not been truly fixed. The 1993 version, however, had a more expanded suprasegmental section.
CRIL stands for Computer Representation of Individual Languages. According to the guidelines, originally passed here, CRIL must have: a digital speech signal, a narrow phonetic or broad phonemic transcription and finally a phonemic citation form. These guidelines were instituted quickly into language software.