Phone separator sometimes adds additional separators trailing the end of a word

[RhyanJohnson]

See issue initially reported here: bootphon/phonemizer#31

Note the two trailing '*' after the phonemic representation of 'lion'

$ echo "The lion and the tiger ran" | espeak-ng -x --ipa -q --sep=**
ð*ə l*aɪə*n** æ*n*d ð*ə t*aɪ*ɡ*ɚ ɹ*æ*n

Additional examples:
the hello but the gives ð*ə h*ə*l*oʊ** b*ʌ*t ð*ə
Here there and everywhere gives h*ɪɹ ð*ɛɹ** æ*n*d ɛ*v*ɹ*ɪ*w*ɛɹ
He was hungry and tired. gives h*iː w*ʌ*z h*ʌ*ŋ*ɡ*ɹ*i** æ*n*d t*aɪɚ*d
He was hungry but tired. gives h*iː w*ʌ*z h*ʌ*ŋ*ɡ*ɹ*i** b*ʌ*t t*aɪɚ*d
The tiger or the lion gives ð*ə t*aɪ*ɡ*ɚ** ɔːɹ ð*ə l*aɪə*n
The lion or the tiger gives ð*ə l*aɪə*n** ɔːɹ ð*ə t*aɪ*ɡ*ɚ

I noticed it around conjunctions like 'and', 'but, and 'or', but not always:
Lions and tigers and bears, oh my! gives l*aɪə*n*z æ*n*d t*aɪ*ɡ*ɚ*z** æ*n*d b*ɛɹ*z oʊ m*aɪ
Lions and tigers run together gives l*aɪə*n*z æ*n*d t*aɪ*ɡ*ɚ*z ɹ*ʌ*n t*ə*ɡ*ɛ*ð*ɚ

[RhyanJohnson]

Also around the conjunction 'which':
He wanted to see her about a plan which he had in his head. gives h*iː w*ɑː*n*t*ᵻ*d t*ə s*iː h*ɜː*ɹ ɐ*b*aʊ*t ɐ p*l*æ*n** w*ɪ*tʃ h*iː h*ɐ*d ɪ*n h*ɪ*z h*ɛ*d

[RhyanJohnson]

Single trailing separator (on phonemic 'of the'):
editions of the evening papers gives ɪ*d*ɪ*ʃ*ə*n*z ʌ*v*ð*ɪ* iː*v*n*ɪ*ŋ p*eɪ*p*ɚ*z