handle warning for undefined key

fix deprecation warning on PHP 8.4 with xml_set_object()

RuntimeException: Function xml_set_object() is deprecated since 8.4, provide a proper method callable to xml_set_*_handler() functions on line 6808 in file vendor/econea/nusoap/src/nusoap.php

Bump version

Fix: The issue causing a Deprecated error in PHP 8.2 has been fixed. …

…The variable $substrXml is no longer used, as it was erroneously receiving null for the offset and is now irrelevant.

Feature: Added support for "literal wrapped". (#100)

Fix : Variables are undefined in some case

Support PHP8.2

Readme versions and update gitattributes (#81)

Readme: update versions

Composer: branch alias to v0.10.x