Wrap terminal line output to 80 characters

Scannability would be improved greatly if lines were wrapped at 80 characters.

Here is example terminal output from the command `asdf help`. The longest unwrapped line is 125 characters:

```
asdf help
version: v0.7.6-6207e42

MANAGE PLUGINS
asdf plugin add [] Add a plugin from the plugin repo OR,
add a Git repo
as a plugin by specifying the name an
d repo url
asdf plugin list [--urls] [--refs] List installed plugins. Optionally sh
ow git urls and git-ref.
asdf plugin list all List plugins registered on asdf-plugi
ns repository with URLs
asdf plugin remove Remove plugin and package versions
asdf plugin update [] Update a plugin to latest commit or a
particular git-ref.
asdf plugin update --all Update all plugins

MANAGE PACKAGES
asdf install [ ] Install a specific version of a packa
ge or,
with no arguments, install all the pa
ckage
versions listed in the .tool-versions
file
asdf uninstall Remove a specific version of a packag
e
asdf current Display current version set or being
used for all packages
asdf current Display current version set or being
used for package
asdf where [] Display install path for an installed
or current version
asdf which Display the path to an executable
asdf shell Set the package version in the curren
t shell
asdf local Set the package local version
asdf global Set the package global version
asdf list List installed versions of a package
asdf list all List all versions of a package

UTILS
asdf exec [args..] Executes the command shim for current
version
asdf env [util] Runs util (default: `env`) inside the
environment used for command shim execution.
asdf reshim Recreate shims for version of a packa
ge
asdf shim-versions List on which plugins and versions is
command available
asdf update Update asdf to the latest stable rele
ase
asdf update --head Update asdf to the latest on the mast
er branch

"Late but latest"
-- Rajinikanth
```