Initiate release (digital-asset#2745)

Release DAML SDK 0.13.21 (digital-asset#2693)

Release 0.13.20 (digital-asset#2633)

Release 0.13.19 (digital-asset#2525)

Release 0.13.18 (digital-asset#2447)

release 0.13.16 (digital-asset#2353)

Release SDK 0.13.15 (digital-asset#2286)

Prepare for release 0.13.14 (digital-asset#2246)

Release 0.13.13 (digital-asset#2170)

https://www.youtube.com/watch?v=4m1EFMoRFvY

Prepare release (digital-asset#2074)