Spam filtering options

• Add spam filtering options

Experimental Support for Zebra-backed LightwalletD

• Add experimental support for Zebra- LightwalletD

Rescan Bugfix

• Fix an issue where the rescan wouldn't work if the wallet birthday was specified as 0 or pre-sapling

Orchard Bugfixes

• Fix "bad-txn-unknown-orchard-anchor" error
• Fix issue with reorgs
• Fix issue where sometimes rescanning wouldn't work.

Bugfixes

• Minor bug fixes in this release

Zecwallet Lite with Orchard

• Full support for Orchard pool
• Send + Receive using Unified Addresses with memos
• Migrate from Sapling -> Orchard pool
• Various small bug fixes.

Zecwallet Orchard

• Full support for Orchard transactions
• UA address support.

Bugfixes and Improve Sync Performance

• Fix issue where wallet would start without being synced
• Fix issue where wallet would show synced even when it was not
• Use batch sync to speed up trial_decryptions

Fix Sync Issues

This release fixes several sync issues.

• Dynamic batch sizes to adjust for empty/full blocks
• Save sync progress so we don't have to restart if we crash
• Parallelism improvements
• Improve connectivity and handle server connection failures gracefully
• Tweak sync parameters to use as many threads as possible.

Save sync progress

• Save sync progress so we don't have to keep resyncing