ipa output: option for “ə + ˞” rather than ɚ

[cmrdt]

therefore could also do & blends with
ɑ˞ c˞

also if could allow for fuzzy phomeme input (user friendly) see:

[rhdunn]

Using the combined ɚ character is perfectly valid, just like using the combined a + umlaut character.

espeak-ng uses broad phoneme transcriptions for input specific to each language, just like the SPRs referenced in that link to the watson TTS docs, using an ASCII representation.