check that sqlite library is compiled with threadsafe code (#63)

tests/SMPClient.hs

@@ -25,7 +25,7 @@ testPort = "5000"
 
 testSMPClient :: MonadUnliftIO m => (Handle -> m a) -> m a
 testSMPClient client = do
-  threadDelay 50_000 -- TODO hack: thread delay for SMP server to start
+  threadDelay 250_000 -- TODO hack: thread delay for SMP server to start
   runTCPClient testHost testPort $ \h -> do
     line <- liftIO $ getLn h
     if line == "Welcome to SMP v0.2.0"