minor fix in Trender Library

Update Trender_defs.h

increment TDR_VERSION after the merge from @colvert (commit: 3da637a83233ca64d8f24c24c1e6bec1ffaa0c0b)

First Trender library release

This release brings Trender as a Arduino library

last v1 release

last release based on a single Arduino sketch file (.ino) and to leave the floor to v2 which brings Trender as a Arduino library