Add MWE and mess around with pushback bugs#1191

Draft

alerque wants to merge 3 commits intosile-typesetter:masterfrom alerque:pushing-my-limits

+22-10

Commits on Aug 26, 2021

fix(typesetter): Output readable debug information from pushBack()
alerque
committed
test(packages): Add MWE showing both parts issue sile-typesetter#1185
alerque
committed
fix(packages): Mitigate or obscure unidentified pushBack() bug
alerque
committed