Restler v6.0.0 - Modern PHP 8+ with async support and full documentation

Fixes dynamic property creation error in PHP 8.3

Fixes unwanted dependency by avoiding dependencies check too early

FIxes object handling for nesting by dot

Fixes object handling for nesting by dot

Fixes Html to render correct error view and allow error view customis…

…ation

Merge pull request #664 from RahulKumarSaini/master

Make form_key/csrf token regeneration configurable.

Documents response composing for success and exception. Fixes #522 and …

…#526

Documents response composing for success and exception. Fixes #522 and …

…#526

Bypass pre filtering for parameters with multiple types. Closes #673