This is a set of utility functions that I find myself rewriting frequently.
Normally, putting functions into a module introduces a dependency on that
module which can be a hassle in some situations. This is a "smart" module which
is capable of replacing the use Dean::Util... line with the code
for the requested functions (and their dependencies). Thus, machines that have
Dean::Util installed can use it as a module, but when requested, a (Dean::Util)
dependency-free version of the file may be made.