* make offline-reporting infrastructure more generic
* add a listener-trait for watching when the timestamp has been set
* prevent inclusion of empty offline reports
* add test for exclusion
* generate aura-offline reports
* ability to slash many times for being offline "multiple" times
* Logic for punishing validators for missing aura steps
* stub tests
* pave way for verification of timestamp vs slot
* alter aura import queue to wait for timestamp
* check timestamp matches seal
* do inherent check properly
* service compiles
* all tests compile
* test srml-aura logic
* aura tests pass
* everything builds
* some more final tweaks to block authorship for aura
* switch to manual delays before step
* restore substrate-consensus-aura to always std and address grumbles
* update some state roots in executor tests
* node-executor tests pass
* get most tests passing
* address grumbles
* Generalize BlockImport
- move ImportBlock, BlockOrigin, ImportResult into shared sr-primitives
- let Consensus provide and traits again
- update consensus traits to latest development
- implement traits on client::Client, test_client::TestClient
- update RHD to use the new import_block API
* Move ImportBlock into consensus-common
* Send import notification in aura tests
* Integrating aura into service
* Make Signatures more generic
* Aura Block Production with the given key
* run aura on the thread pool
* start at exact step start in aura
* Add needed wasm blob, in leiu of better solutions.
* Make API ids consistent with traits and bring upstream for sharing.
* Add decrease_free_balance to Balances module
* Encode `Metadata` once instead of two times
* Bitops include xor
* Upgrade key module.
* Default pages to somewhat bigger.
* Introduce upgrade key into node
* Add `Created` event
Shawn Tabrizi