Don't require sphinx spelling to be installed, for readthedocs benefit
Don't require sphinx spelling to be installed, for readthedocs benefit

bwhmather/cryptography,sholsapp/cryptography,dstufft/cryptography,Ayrx/cryptography,Ayrx/cryptography,bwhmather/cryptography,kimvais/cryptography,sholsapp/cryptography,Hasimir/cryptography,kimvais/cryptography,Lukasa/cryptography,bwhmather/cryptography,skeuomorf/cryptography,bwhmather/cryptography,skeuomorf/cryptography,Hasimir/cryptography,dstufft/cryptography,Hasimir/cryptography,kimvais/cryptography,dstufft/cryptography,Lukasa/cryptography,Lukasa/cryptography,dstufft/cryptography,sholsapp/cryptography,kimvais/cryptography,dstufft/cryptography,skeuomorf/cryptography,Hasimir/cryptography,Ayrx/cryptography,Ayrx/cryptography,sholsapp/cryptography,skeuomorf/cryptography