[v0.9.0] CLI argument: naming clash in `repl` command

[JordanMartinez]

Notice that both --deps-only and --dependency both use -d.

$ spago repl --help
Usage: spago repl [-c|--global-cache GLOBAL-CACHE] [-d|--dependency DEPENDENCY]
                  [-p|--path PATH] [ ..ANY `PURS COMPILE` OPTION]
                  [-d|--deps-only]
  Start a REPL

Available options:
  -c,--global-cache GLOBAL-CACHE
                           Configure the global caching behaviour: skip it with
                           `skip` or force update with `update`
  -d,--dependency DEPENDENCY
                           Package name to add to the REPL as dependency
  -p,--path PATH           Source path to include
   ..ANY `PURS COMPILE` OPTION
                           Options passed through to `purs compile`; use -- to
                           separate
  -d,--deps-only           Only use sources from dependencies, skipping the
                           project sources.
  -h,--help                Show this help text

[f-f]

Good catch! Fix up in #352