v2.1.0.5

CORE - Fix a rare issue where witnessing devices would fail to witness due to not completing a proper rescan after importing a witness address.
CORE - Improve transaction propagation speed by pushing mempool to new connections
CORE - Introduce builds of the UI client for all architectures ("arm" and "aarch64" previously did not have)
CORE - Introduce "riscv64" to the list of officially supported architectures.
CORE - Introduce AppImage installers for "arm" and "aarch64"
RPC - New command "getaccountaddress" to get current receiving address (as would be displayed in UI) for an account.
MISC - Update to newer version of Qt which should improve various minor UI aspects.