Update README.md

Author: krzjoa

README.md

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 * [Hera](https://github.com/keplr-io/hera) - Train/evaluate a Keras model, get metrics streamed to a dashboard in your browser.
 * [Spektral](https://github.com/danielegrattarola/spektral) - Deep learning on graphs.
 * [qkeras](https://github.com/google/qkeras) - A quantization deep learning library.
-* [Keras add-ons...](https://github.com/krzjoa/awesome-python-datascience/blob/master/addons/keras_addons.md)
 
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 ### MXNet
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 * [Marsyas](https://github.com/marsyas/marsyas) - Music Analysis, Retrieval and Synthesis for Audio Signals.
 * [muda](https://github.com/bmcfee/muda) - A library for augmenting annotated audio data.
 * [madmom](https://github.com/CPJKU/madmom) - Python audio and music signal processing library.
-* [more: Python for Scientific Audio](https://github.com/faroit/awesome-python-scientific-audio)
 
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 ## Computer Vision