IP subnet to Range conversions

Conversion between IP subnet (CIDR) and IP range (start-address - end-address) is supported

Try to parse input arguments as hexa-decimal numbers without 0x prefix

Try to parse input arguments as hexa-decimal numbers even without 0x prefix if deca-decimal conversion fails
Example:
10020304 #Will be parsed as decimal integer since no 0x prefix
a00203c1 #Will be parsed as hexadecimal number even without 0x prefix because decimal number conversion is not possible.

Make the command act as a filter on no ip-address arguments

Bumped version number.

Updated README

Force conversion types with command line options

v0.2.1

Bumped version

v0.1

Initial release