* wc: Don't read() if we only need to count number of bytes
* Resolve a few code review comments
* Use write macros instead of print
* Fix wc tests in case only one thing is printed
* wc: Fix style
* wc: Use return value of first splice rather than second
* wc: Make main loop more readable
* wc: Don't unwrap on failed write to stdout
* wc: Increment error count when stats fail to print
* Re-add Cargo.lock
- refactor internal version specifications to be ">=M.m.p" (where M.m.p is *already published*)
## [why]
Loosening internal version dependencies decreases the coupling between packages such
that packages can be published in a looser order. It allows the packages to be version
updated and published in tandem (ie, by using `cargo workspace ...`). Once published,
the internal versions can then be updated (again, to an *already published* package
version), as needed.
