Convert everything to jmalloc

[ecmargo]

[sga001]

https://twitter.com/gakonst/status/1654259190196736000

And example of how to do it:

https://github.com/sharkdp/fd/pull/481/files

[jkwoods]

Here: #53

Related to performance, I think we should probably get rid of

[profile.release]
debug = true

at some point, right?