Allow for defining the number of directories tracked

[Alives]

I use tons of directories and find that z is truncating (averaging?) down to a small number. I'd like to hand it more space, something like 50 or so. Can you add a configuration option for that?

[rupa]

See https://github.com/rupa/z/issues/53 I'm open for discussion, tweaks, or easily grokked configurables but it's not quite as simple as a fixed number of dirs ... at least that should give you an idea of what can be tweaked, and if you find better 'magic numbers' than current I'd love to know about them :smile:

[Alives]

Ah, this is a dupe then. Thanks!

[rupa]

Not a dupe really - closed issues have little visibility, and i only closed it cause I improved (?) the algorithm somwhat, but it's still mostly numbers I just picked instead of anything with solid math.

[Alives]

Ah yes I see. Maybe I'll play with adjusting the numbers and see if that helps. I'll reopen.