$ZER — Cygnus 3.1.1

Target deprecation 101711 on about 1/2/2021

The release adds several RPCs to support the ZeroVerse wallet.
-getsaplingblocks
-getsaplingwitness
-getsaplingwitnessatheight
Zindex was ported from Hush to measure zaddress useage and provide chainwide stats.
z_viewtransaction was cherry picked from Zcash.

https://github.com/zerocurrencycoin/Zero/releases/tag/v3.1.1

https://twitter.com/ZeroCurrencies/status/1270308991055400961?s=20