tallyard v0.4.1

This release fixes a message processing race condition, fixes a rare but fatal
nil pointer panic, and adds extra logging.

David Florness (8):
      README: mention need for libolm in source instructions
      README: "libolm ... library" is redundant
      Log sync errors
      Log sync exits
      Enable extra mautrix-go logging and bump mautrix-go for new logging
      Fix race condition in processing logic
      Fix panic when our device doesn't have election private keys
      Bump version to v0.4.1