setup.py: bump version to 0.0.4

Author: Williangalvani

setup.py

@@ -6,7 +6,7 @@
     long_description = f.read()
 
 setup(name='bluerobotics-ping',
-      version='0.0.1-dev',
+      version='0.0.4',
       description='A python module for the Blue Robotics Ping1D echosounder',
       long_description=long_description,
       long_description_content_type='text/markdown',