Added possibility to send image to stdout

colorcode/cli.py

@@ -7,6 +7,7 @@ including argument parsing and main procedure
 """
 
 import argparse
+import sys
 
 from .loader import BUILDERS
 from .imgen.interleave import INTERLEAVING_MODES, BEST_PARSE_MODE
@@ -167,4 +168,7 @@ def main():
 	codes = [g.encode() for g in cgenInstances]
 	imgenerator = ImGenerator(codes, **imgenKwargs)
 	imgenerator.drawCode()
-	imgenerator.saveImage(outfile)
+	if outfile == "-":
+		imgenerator.saveImage(sys.stdout.buffer, format="png")
+	else:
+		imgenerator.saveImage(outfile)