Cascade -e files when combined with -c
Cascade -e files when combined with -c

When using `-e` and `-c` together we should load the .<env> and .local
versions of the files specified by `-e`.

Note that this is a change from the behavior introduced in
ba7c7bab936384c29cf281d486906f984de78b3d (v3.2.0) when combining
`-e extra` with `-c` would result in processing:
[ '.env.local', '.env', 'extra' ]

It will now process:
[ 'extra.local', 'extra' ]

caske33/dotenv-cli