Spongy Castle v1.53.0.0 (from BC v1.53)

This release is now available on Maven Central, based on Bouncy Castle r1rv53. I'd like to extend my thanks to the Bouncy Castle team for the build quality of this release - unlike all previous releases of Spongy Castle, I didn't have to fix any weirdness in the BC test suite to make this release - only acceptable weirdness caused by the Bouncy->Spongy rename itself.

Usage of Spongy Castle continues to climb, with over 4000 downloads last month on Maven Central alone:

A few tweets from users of Spongy Castle... and feedback is always welcome! (tho' remember the real work is actually done by the Bouncy Castle team - I just repackage their work for Android).