This helps prevent users from triggering an assert if they pass in
Sapling addresses to RPC calls: z_mergetoaddress, z_importviewingkey
and z_exportviewingkey.

…on, r=str4d

Replace Sapling support-related asserts with JSON errors

This helps prevent users from triggering an assert if they pass in Sapling addresses to RPC calls which do not fully support Sapling yet: z_mergetoaddress, z_importviewingkey and z_exportviewingkey.

Part of zcash#3533.

This reverts commit 554e00e.

Enable Sapling features on mainnet

Reverts the last commit from zcash#3458.

…r=str4d

Do not use APPROX_RELEASE_HEIGHT to get consensus branch id in regtest mode.

Closes zcash#3534

…bitcartel

Sapling support for z_listreceivedbyaddress

Closes zcash#3379.

…rtel

Use max priority for all shielded transactions

Addresses zcash#3546 (comment)

…artel

Add newly discovered sapling addresses to the wallet when decrypting

Closes zcash#3511

Sapling support for z_listunspent

Closes zcash#3378.