Delete obsolete duplicates in FinRL vs FinRL-Meta

1)
I cannot understand why there is FinRL and FinRL-Meta. Why you don't merge them? Duplicates:

https://github.com/AI4Finance-Foundation/FinRL/blob/master/tutorials/3-Practical/FinRL_MultiCrypto_Trading.ipynb

https://github.com/AI4Finance-Foundation/FinRL-Meta/blob/master/tutorials_notebook/3-Practical/FinRL_MultiCrypto_Trading.ipynb

https://github.com/AI4Finance-Foundation/FinRL-Meta/blob/master/tutorials_python/3-Practical/FinRL_MultiCrypto_Trading.py seems empty

Tutorial FinRL:
Seems it doesn't use FinRL. Than why it's in FinRL repo, if it use only FinRL-Meta?
DataProcessor in FinRL doesn't support Binance.

For what is better to use FinRL and for what FinRL-Meta?
FinRL is obsolete (vs FinRL-Meta) and I can just ignore it and use FinRL-Meta only?
Why do you support 2 similar repos with similar structure, but one is more updated than another?

By your info in README.md https://github.com/AI4Finance-Foundation/FinRL I think that I need FinRL, but seems FinRL-Meta is actual and better version of FinRL. FinRL obsolete (vs FinRL-Meta)

2)
CryptoEnv there is in tutorial, but also it's available from finrl_meta.env_crypto_trading.env_multiple_crypto import CryptoEnv . Which one is more updated and better to use?
https://github.com/AI4Finance-Foundation/FinRL/blob/master/finrl/finrl_meta/env_cryptocurrency_trading/env_multiple_crypto.py

https://github.com/AI4Finance-Foundation/FinRL-Meta/blob/master/finrl_meta/env_crypto_trading/env_multiple_crypto.py

Why doesn't delete it from tutorial and just import from actual repo?