Allow unbounded flamegraph sampling

[masklinn]

When trying to sample desktop or web applications, the triggers are generally some user interaction until the end of whatever it did, with the "whatever" being only loosely specified time-wise possibly ranging from a fraction of a second to several minutes (e.g. a complex import process).

The current time-bound sampling duration is really inconvenient for this, it would be nice if like the "top" mode it were possible to start sampling and have the sampling only end when e.g. C-c is sent to py-spy.

[benfred]

Hrm - I think I messed up somewhere, this is supposed to be happening right now (with this commit 290584d).

Edit: this commit was after the last release - will be fixed in the next release.

[masklinn]

Excellent, I had not seen that. Too bad that it missed the release by 2 days / a commit.

I'll close this then, #21 is fine, thanks, and looking forward to the next release.

[benfred]

Change is in v0.1.9