Update to support Nim 0.18

cliutils.nim

@@ -108,7 +108,7 @@ proc onStop(sig: cint) {.noconv.} =
 
   quit(QuitSuccess)
 
-proc daemonize*(pidfile, si, so, se: string, daemonMain: proc(): void): int =
+proc daemonize*(pidfile, si, so, se: string, daemonMain: proc(): void): Pid =
 
   if fileExists(pidfile):
     raise newException(IOError, "pidfile " & pidfile & " already exists, daemon already running?")

cliutils.nimble

@@ -1,11 +1,11 @@
 # Package
 
-version       = "0.3.1"
+version       = "0.3.2"
 author        = "Jonathan Bernard"
 description   = "Helper functions for writing command line interfaces."
 license       = "MIT"
 
 # Dependencies
 
-requires @["nim >= 0.15.3", "docopt"]
+requires @["nim >= 0.18.1", "docopt"]