Known regressions since network-rewrite

[SomberNight]

A very large chunk of the networking code was rewritten recently, using asyncio and aiorpcx. This introduced some regressions:

• [x] merchant websockets are broken
  • being addressed in https://github.com/spesmilo/electrum/pull/4753
• [x] the notify CLI command is broken
  • being addressed in https://github.com/spesmilo/electrum/pull/4753
• some things are not using the proxy now (everything needs to use the proxy explicitly, unlike before where the socket module was monkey-patched)
  • [x] paying bip70 payment requests
  • [x] cosigner pool plugin
  • [x] digital bitbox 2fa
  • [x] greenaddress plugin
  • [x] email plugin
  • [ ] dnssec (for openalias)
• [x] example scripts in the scripts directory

[SomberNight]

bip70 now uses proxy with https://github.com/spesmilo/electrum/commit/1686a97ece31aaa1d2c0e6c7042137a5e8a04943

[SomberNight]

dbb done https://github.com/spesmilo/electrum/commit/e1f4865844ce1bbdbd91a76b8ba245ae04b6300e

[ecdsa]

greenaddress done 75f6ab913316998e1e3c4b1d256de17bc367ea8e

[SomberNight]

email plugin was removed https://github.com/spesmilo/electrum/commit/c67c4e95dca6e0d5d995d8a11fea666918bcaab9

[SomberNight]

cosigner pool plugin was fixed in https://github.com/spesmilo/electrum/commit/134fe73f1aa1da4afccd3361e5d3ea51e31a4bc4