Update __init__.py to remove distutils deprecated dependence

[x86-69]

Removed deprecated strtobool import and added own implementation stated on #61.

[zerwes]

Hello @itachi-cracker and thank you for your PR and help

could you please fix my draft of the strtobool function:

 def strtobool(val):
+    """
+    minimal implementation of the strtobool function (replaces deprecated distutils)
+    """
     val = val.lower()
     if val in ("y", "yes", "t", "true", "on", "1"):
         return 1
-    elif val in ("n", "no", "f", "false", "off", "0"):
+    if val in ("n", "no", "f", "false", "off", "0"):
         return 0
-    else:
-        raise ValueError("invalid truth value %r" % (val,))
+    raise ValueError("invalid truth value %r" % (val,))

[zerwes]

LGTM; thx

[zerwes]

release 0.5.6 including the fixes has been released. thank you