* add and wire up `VerticalLayout` which is now the default
* adapt flags spec to use single-column layout for testing sort order
since the output is hard to verify when in vertical format
Fixes#189.
* make `-h` an alias for `--human-readable`
* both options are simply ignored when used with an argument or another option
* running `colorls -h` still shows the help text since just as before
Both are also supported by GNU ls, although currently not all formats are
supported.
This change lays ground for implementing column based formatting and also
supports using a pager with colorls keeping the formatting intact:
`colorls --color -x | less --tabs=4 -RFX`
This option works the same as for GNU ls, although if not specified colorization
is on by default (the `auto` mode).
Using `--color` is equivalent to `--color=always`.
This generates `file://` links using ANSI escape sequences which opens the
given file using the default application for the file type on your system.
A terminal emulator supporting hyperlinks is required, otherwise the links
will be ignored.
