LBRY SDK 0.40.0 Release

LBRY SDK 0.40.0 is released, will be shipped with the next app. Nothing major except a fix to wallet transaction syncing that was introduced in 0.39.2/3. This version connects to multiple wallet servers to sync up, and then uses a single one for new transactions.

Full release notes and download here: https://github.com/lbryio/lbry-sdk/releases/tag/v0.40.0