v0.3

• added is_reusable parameter. Turning it off saves memory (e.g. for command line script) and keeping it on makes multiple calls to generate_image faster
• added log2_k parameter to control top-k image token sampling
• added log2_supercondition_factor parameter to control the super conditioning amount
• added log2_mid_count and generate_image_stream to stream intermediate outputs. Incomplete tokens are detokenized to an image multiple times during the decoding process. This adds very little time to the overall run time
• added dtype parameter to autocast operations to float32, float16, or bfloat16
• a grid size of 8x8 now generates in 35 seconds on an A100