I tend to lurk around this site, as the questions are usually quite interesting. But I'm not enough of an expert to answer (m)any of them.
6 Vector notation in siunitx jan 12 '13
5 Titles ending with punctuation in biblatex-ieee dec 4 '12
3 \textmu doesn't work with newtxtext feb 10 '13
1 Setting camera view within Sketch may 13 '14