Integer comparison.

[pingumacpenguin]

A minor issue, when compiling (on Linux), I see the following warning.

src/algo.c: In function ‘locate_events’: src/algo.c:609:30: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] events[i] + p->timestamp < p->sample_count ||

This is a potential risk, but not a major bug.