Added 0b1010 binary format.  Fixed hex and octal to allow negative ints
Added 0b1010 binary format.  Fixed hex and octal to allow negative ints

bradparks/ChaiScript__cplusplus_scripting_language,bradparks/ChaiScript__cplusplus_scripting_language,bradparks/ChaiScript__cplusplus_scripting_language,kamilzubair/ChaiScript,lefticus/ChaiScript,kamilzubair/ChaiScript,kamilzubair/ChaiScript,lefticus/ChaiScript,lefticus/ChaiScript