GT transition

This minor patch release introduces an automatic class alias check for classes within the Gt* namespace prefix, automatically fixing the case to GT*, in preparation of the transition to all repos having the GT namespace prefix.

• Create SECURITY.md by @g105b in #144
• Add JetBrains sponsorship to README with H1 heading by @g105b in #146
• 147-gt-transition by @g105b in #148

Full Changelog: v1.3.2...v1.3.4