Correctly detect Open3#capture3 existance.

[fbernier]

The commit message is not exactly right, but the fact is that method_defined? will tell you whether INSTANCES of the class with the module included responds to the given method, which is not the case for Open3#capture3. We have to use respond_to? for this case. Before this commit, your code was always using your bundled version of capture3.

[davetapley]

@fbernier @csquared Why wasn't this merged?
I just noticed the issue with method_defined? and was about to suggest the same fix.

[fbernier]

Dunno for the first commit ... Forget about the second one though it's garbage...

[csquared]

@fbernier @dukedave Sorry i missed this! I've had about 1K notifications that i just marked as all read because I haven't been noticing these important ones.

I just pushed the fix y'all recommended and incremented the version.

Any interest in commit bit?

[fbernier]

Thanks for the merge. I'd be interested in commit if you'd like. I might also spike out a cleaner version of the "timeout option" commit I made eventually.