LEGEND
------

[x] = done; 
[~] = in-progress; 
[-] = won't do; 
[ ] = not started;

(!) = Priority; 
(W) = Will do; 
(S) = Should do; 
(C) = Could do; 
(N) = Won't do; 
(?) = Needs investigating;

TODO
----
- [x] (N) Handle user errors (e.g. calling `htrack_allocsiz` on pointer not allocated by htrack).
  The stdlib doesn't do this for `free` when you call it on a pointer not malloc'd.
- [ ] (S) Find a better way to handle errors that assert(...)
  This was a semi-temporary handler for development.