This document outlines the development philosophies of the WordPoints organization.
In addition to this document, it is recommended that you also understand WordPress's development philosophies. WordPoints follows these, except as noted otherwise below.
Libraries MAY contain code whose sole purpose is to maintain backward compatibility with older versions of other libraries (e.g., WordPress). However, libraries SHALL NOT contain such compatibility code for versions of libraries which are no longer actively maintained with security updates (e.g., WordPress 3.6).
Everything must be escaped immediately before output/use. Period. A great read on this topic.