Valid support for arrays or objects

[FGRibreau]

[] are not supported, maybe use something like 0, ... ?

[Freyskeyd]

This issue can be close due to latest release i think.

[FGRibreau]

Sadly this one is not related with #10 because common-env still does not support array of objects and can't read arrays from environment variables, that's why this issue is still there :)

[FGRibreau]

API idea:

ENRICHMENTS__0_OUTBOUNDFILTERS__0_ROLE_NAME
ENRICHMENTS__1_OUTBOUNDFILTERS__0_ROLE_NAME

for

ENRICHMENTS[0]_OUTBOUNDFILTERS_ROLE_NAME

because [0] is encoded as __0 for the lack of a better alternative