* getting started with replacing HardwareWalletManager
* trezor and ledger impls the new trait with some drawbacks
* Everything move to the new trait
* It required lifetime annotations in the trait because [u8] in unsized
* Lets now start moving entry point from HardwareWalletManager
* rename trait to Wallet
* move thread management to the actual wallets
* Moved thread management to each respective Wallet
* Cleaned up pub items that is needed to be pub
* Wallet trait more or less finished
* Cleaned up docs
* fix tests
* omit removed docs
* fix spelling, naming och remove old comments
* ledger test is broken, add correct logging format
* So locally on my machine Linux Ubuntu 17.10 the test doesn't panic but on the CI server libusb::Context::new()
fails which I don't understand because it has worked before
* Additionally the ledger test is optional so I lean toward ignoring it the CI Server
* ignore hardware tests by default
* more verbose checking in ledger test
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