[spam][crazy] Adding Cert Pinning to E-X

[Undiscussed Horrific Abuse, One Victim of Many]

> electrumx uses a quick small network library that i think of as a
> clean hack at https://github.com/kyuupichan/aiorpcX

"clean" because it's not full of delusional spaghetti, not because it
is particularly more elegant than other code that matches that
property