Adjust superdirtTarget latency

As explained in #660, SuperDirt receives the OSC bundles from SuperCollider immediately and is handed a timestamp.
SuperDirt uses this timestamp to know when to start the sound synthesis.
This timestamp needs to be early on the Link timeline so that the synthesized sound reaches the speakers just in time.
50 milliseconds early appears appropriate, based on experimenting in a Link session with Ableton Live.

BootTidal.hs

@@ -6,7 +6,7 @@ import Sound.Tidal.Context
 import System.IO (hSetEncoding, stdout, utf8)
 hSetEncoding stdout utf8
 
-tidal <- startTidal (superdirtTarget {oLatency = 0.1, oAddress = "127.0.0.1", oPort = 57120}) (defaultConfig {cVerbose = True, cFrameTimespan = 1/20})
+tidal <- startTidal (superdirtTarget {oLatency = 0.05, oAddress = "127.0.0.1", oPort = 57120}) (defaultConfig {cVerbose = True, cFrameTimespan = 1/20})
 
 :{
 let only = (hush >>)