Error when 'other' is given as gender

[Sima Rahimi]

Possible alternatives are not compatible with the ones in the documentation.(PED file format: Sex (1=male; 2=female; other=unknown))

raredisease/assets/schema_input.json

Line 45 in 1489b71

 "enum": [0, 1, 2], 

[Sima Rahimi]

PR -> #550

[Ramprasad Neethiraj]

Fixed in #550