Fix Electrum recovery bug

[junderw]

Note: This can be a potentially breaking change in the following scenario:

1. User creates segwit wallet in Electrum.
2. User imports the seed into BlueWallet.
3. BlueWallet will use the seed to generate a legacy wallet when the seed's version prefix is not legacy.
4. Patched version will suddenly break it for them.

TBH I think the number of users using this is small enough to just patch it and help them out when they create an issue.

[GladosBlueWallet]

♫ This was a triumph. I'm making a note here: HUGE SUCCESS ♫

[android in browser] https://appetize.io/app/k35qqj93gbe5ptyhmczj1v5bw4

download apk

[junderw]

I published v2.0.0 of the electrum-mnemonic library with a new validateMnemonic that doesn't use mnemonicToSeed, and I changed the API to take an optional prefix for mnemonicToSeed instead of validPrefixes with all valid prefixes.

[GladosBlueWallet]

♫ This was a triumph. I'm making a note here: HUGE SUCCESS ♫

[android in browser] https://appetize.io/app/94yht7gejkdxr3kvq4bf7xgrur

download apk

[junderw]

Circle CI build keeps failing at unrelated parts.

[GladosBlueWallet]

♫ This was a triumph. I'm making a note here: HUGE SUCCESS ♫

[android in browser] https://appetize.io/app/8yfqrj925ajz36v1cctd06dat0

download apk

[Overtorment]

thanks!