Update composer file for a complete desc.

v0.3.2-beta

Update the difference.

Remove skip lines constant.

v0.3.1-beta

Remove skip line because I cannot think of a valid use case.

Add exclusionary tags.

Added exclusionary tags so that developers working on migrating to php7 can tag lines that do not need modifications. Subsequent scans will not show the nuances.

running php mar.php -e="@excludeLine" will not include the following foreachByReference nuance:

// @excludeLine
foreach ($arr as &$el) {