Release notes for 10.13.2

The 10.13.2 release fixes an issue with form rendering if FormBuilder V2 is not enabled, and a regression introduced in 10.13.1. It also stops an error being generated if an email tracked link is not found in the database, and resolves an issue with the default select form control where a value with special characters would not be pre-selected. Thanks to Teon Ooi, Jan Jannek, Vivien Wong and Seb Duggan for the contributions.