RFC: change default for logging to `+nowrap`

I'm curious what others think about this, hence I'm putting this up for discussion. And being biased, I'm also specifically interested in hearing about reasons why `+nowrap` is undesirable.

By default, cabal line-wraps its logging output to hardcoded line-length of 79 characters via `wrapText`:

https://github.com/haskell/cabal/blob/3b390592f239bab3545da6226e3730b8ffab3731/Cabal/Distribution/Utils/Generic.hs#L108-L131

In #4091, a verbosity level modified `+nowrap` was introduced which suppresses this line-wrapping;

IMO, having `cabal` pre-linewrap its output interacts badly with terminals or editors if these re-wrap dynamically when resizing the window, readability is IMHO not improved by line-wrapping, and it makes it harder to copy and paste as the terminal can't easily reconstruct the original log message's line endings, and thus the pre-wrapped text is copy-n-pasted into the target including the line-wrapping (which may again not be adequate for the target text-body width).

As an example, this here is a solver failure pre-wrapped via `wrapText`

```
$ cabal new-repl -w ghc-8.6.1 --build-depends 'lens'
Resolving dependencies...
cabal: Could not resolve dependencies:
[__0] trying: fake-package-0 (user goal)
[__1] trying: lens-4.17 (dependency of fake-package)
[__2] trying: transformers-0.5.5.0/installed-0.5... (dependency of lens)
[__3] next goal: hashable (dependency of lens)
[__3] rejecting: hashable-1.2.7.0 (conflict: transformers =>
base==4.12.0.0/installed-4.1..., hashable => base>=4.4 && <4.12)
[__3] rejecting: hashable-1.2.6.1 (conflict: transformers =>
base==4.12.0.0/installed-4.1..., hashable => base>=4.4 && <4.11)
[__3] rejecting: hashable-1.2.6.0 (conflict: transformers =>
base==4.12.0.0/installed-4.1..., hashable => base>=4.4 && <4.10)
[__3] rejecting: hashable-1.2.5.0, hashable-1.2.4.0 (conflict: transformers =>
base==4.12.0.0/installed-4.1..., hashable => base>=4.0 && <4.10)
[__3] rejecting: hashable-1.2.3.3, hashable-1.2.3.2 (conflict: transformers =>
base==4.12.0.0/installed-4.1..., hashable => base>=4.0 && <4.9)
[__3] rejecting: hashable-1.2.3.1, hashable-1.2.3.0, hashable-1.2.2.0,
hashable-1.2.1.0, hashable-1.2.0.10, hashable-1.2.0.9, hashable-1.2.0.8,
hashable-1.2.0.7, hashable-1.2.0.6, hashable-1.2.0.5, hashable-1.2.0.4,
hashable-1.2.0.3, hashable-1.2.0.2, hashable-1.2.0.1, hashable-1.2.0.0,
hashable-1.1.2.5, hashable-1.1.2.4, hashable-1.1.2.3 (conflict: transformers
=> base==4.12.0.0/installed-4.1..., hashable => base>=4.0 && <4.8)
[__3] rejecting: hashable-1.1.2.2, hashable-1.1.2.1, hashable-1.1.2.0,
hashable-1.1.1.0, hashable-1.1.0.0, hashable-1.0.1.1, hashable-1.0.1.0,
hashable-1.0.0 (conflict: lens => hashable>=1.1.2.3 && <1.3)
[__3] fail (backjumping, conflict set: hashable, lens, transformers)
After searching the rest of the dependency tree exhaustively, these were the
goals I've had most trouble fulfilling: hashable, lens, base, transformers,
fake-package
```

...and the same with `+nowrap`:

```

$ cabal new-repl -w ghc-8.6.1 --build-depends 'lens' -vnormal+nowrap
Resolving dependencies...
cabal: Could not resolve dependencies:
[__0] trying: fake-package-0 (user goal)
[__1] trying: lens-4.17 (dependency of fake-package)
[__2] trying: transformers-0.5.5.0/installed-0.5... (dependency of lens)
[__3] next goal: hashable (dependency of lens)
[__3] rejecting: hashable-1.2.7.0 (conflict: transformers => base==4.12.0.0/installed-4.1..., hashable => base>=4.4 && <4.12)
[__3] rejecting: hashable-1.2.6.1 (conflict: transformers => base==4.12.0.0/installed-4.1..., hashable => base>=4.4 && <4.11)
[__3] rejecting: hashable-1.2.6.0 (conflict: transformers => base==4.12.0.0/installed-4.1..., hashable => base>=4.4 && <4.10)
[__3] rejecting: hashable-1.2.5.0, hashable-1.2.4.0 (conflict: transformers => base==4.12.0.0/installed-4.1..., hashable => base>=4.0 && <4.10)
[__3] rejecting: hashable-1.2.3.3, hashable-1.2.3.2 (conflict: transformers => base==4.12.0.0/installed-4.1..., hashable => base>=4.0 && <4.9)
[__3] rejecting: hashable-1.2.3.1, hashable-1.2.3.0, hashable-1.2.2.0, hashable-1.2.1.0, hashable-1.2.0.10, hashable-1.2.0.9, hashable-1.2.0.8, hashable-1.2.0.7, hashable-1.2.0.6, hashable-1.2.0.5, hashable-1.2.0.4, hashable-1.2.0.3, hashable-1.2.0.2, hashable-1.2.0.1, hashable-1.2.0.0, hashable-1.1.2.5, hashable-1.1.2.4, hashable-1.1.2.3 (conflict: transformers => base==4.12.0.0/installed-4.1..., hashable => base>=4.0 && <4.8)
[__3] rejecting: hashable-1.1.2.2, hashable-1.1.2.1, hashable-1.1.2.0, hashable-1.1.1.0, hashable-1.1.0.0, hashable-1.0.1.1, hashable-1.0.1.0, hashable-1.0.0 (conflict: lens => hashable>=1.1.2.3 && <1.3)
[__3] fail (backjumping, conflict set: hashable, lens, transformers)
After searching the rest of the dependency tree exhaustively, these were the goals I've had most trouble fulfilling: hashable, lens, base, transformers, fake-package
```

Personally, I consider the `+nowrap` version easier to parse visually, as it retains more of its original structure. I don't have to cognitively unwrap long lines into their original form to unpack the information.

...opinions?