Add various fixes for SetDeadline functionality#3

Draft

nlon982 wants to merge 5 commits intomasterfrom various-deadline-fixes

+77-20

Commits on Apr 4, 2024

WIP multiple fixes
Nathan Longhurst
committed
Tidy code and add explanatory comments
Nathan Longhurst
committed
Add changelog entry
Nathan Longhurst
committed
Improve explanatory comments; Add fix to write
Nathan Longhurst
committed
Use fixes in https://github.com/Haivision/srtgo/pull/63/files
Nathan Longhurst
committed