[beta] Backports (openethereum#8011)

* Hardware-wallet/usb-subscribe-refactor (openethereum#7860)

* Hardware-wallet fix

* More fine-grained initilization of callbacks by vendorID, productID and usb class
* Each device manufacturer gets a seperate handle thread each
* Replaced "dummy for loop" with a delay to wait for the device to boot-up properly
* Haven't been very carefully with checking dependencies cycles etc
* Inline comments explaining where shortcuts have been taken
* Need to test this on Windows machine and with Ledger (both models)

Signed-off-by: niklasad1 <[email protected]>

* Validate product_id of detected ledger devices

* closed_device => unlocked_device

* address comments

* add target in debug

* Address feedback

* Remove thread joining in HardwareWalletManager
* Remove thread handlers in HardwareWalletManager because this makes them unused

* fixed broken logs (openethereum#7934)

* fixed broken logs

* bring back old lock order

* removed bloom groups from blockchain

* revert unrelated changes

* simplify blockchain_block_blooms

* Bump WS (openethereum#7952)

* Calculate proper keccak256/sha3 using parity. (openethereum#7953)

* Increase max download limit to 128MB (openethereum#7965)

* fetch: increase max download limit to 64MB

* parity: increase download size limit for updater service

* Detect too large packets in snapshot sync. (openethereum#7977)

* fix traces, removed bloomchain crate, closes openethereum#7228, closes openethereum#7167 (openethereum#7979)

* Remvoe generator.rs

* Make block generator easier to use (openethereum#7888)

* Make block generator easier to use

* applied review suggestions

* rename BlockMetadata -> BlockOptions

* removed redundant uses of blockchain generator and genereator.next().unwrap() calls

ethcore/Cargo.toml

@@ -8,7 +8,6 @@ authors = ["Parity Technologies <[email protected]>"]
 
 [dependencies]
 ansi_term = "0.9"
-bloomchain = "0.1"
 bn = { git = "https://github.com/paritytech/bn" }
 byteorder = "1.0"
 common-types = { path = "types" }