* State pinning in client
* Canonicalization queue
* Fixed prioritization queue
* possible fix of "hash mismatch"
* Check for pinned discarded states
* Release state before finalization
* Style
* Style
* Make use of parity-codec "derive" crate feature
* Bump impl_version
* Update wasm files and Cargo.lock files
* Transferred to parity_codec derive feature for the rest of the crates
* Update wasm binaries and lock files
* Update core and node wasm binaries
Went through the TODOs, removed a bunch, which are outdated or nothing more than a regular comment, documented a bunch more as actual tickets and made them FIXMEs and unified their structure (`FIXME #TICKETNO DESC` for local tickets, `FIXME: DESC LINK` for external tickets) for easier in-editor support. Further more remove unnecessary remarks and related old code that I noticed in that instance.
* [core/primitives] Update crunchy 0.1 => 0.2
* [core/primitives] Update fixed-hash 0.2 => 0.3.0-beta
* [core/primitives] Update `uint` 0.4 => 0.5.0-beta
* [core/state-machine] Fix errors emerged by fixed-hash update
* [core/state-db] Fix errors that emerged from fixed-hash update
* [core/sr-io] Fix errors that emerged from the fixed-hash update
* [core/trie] Fix errors emerged from fixed-hash updates
* [core/trie] Make use of new Hash::as_fixed_bytes_mut method in tests
* [core/sr-primitives] Fix errors emerged from updating fixed-hash
* [core/executor] Fix errors that emerged from fixed-hash update
* [core/test-runtime] Fix errors that emerged from updating fixed-hash
* [core/test-runtime] Fix an error that emerged from fixed-hash update
* [core/transaction-pool] Fix errors that emerged from updating fixed-hash
* Add From<u64> impl for hash types defined in core/primitives
* [core/client/db] Fix errors that emerged from fixed-hash update
* [core/{client/network/rpc}]: Fix errors emerged by fixed-hash update
* [node/{cli/executor/runtime}]: Fix errors emerged by updating fixed-hash
* [core/network]: Fix bug in parsing constant str
* Update Cargo.lock
- Add crunchy 0.2.1
- fixed-hash 0.2.2 => 0.3.0-beta.3
- Add static-assertions 0.2.5
- uint 0.4.1 => 0.5.0-beta.1
* [core/primitives]: Add fixed-hash/rustc-hex feature for FromStr impl
* [core/primitives] No longer provide From<u64> impl for hash types if byteorder support is not enabled
* [core/primitives] Revert to using From impl again in primitives tests
* [core/..] Fix some bugs that emerged by recent fixed-hash updates
* Update a bunch of Cargo.lock files
* [core/state-db] Re-add whitespace between attr and extern crate/mod
* [core/primitives] Fix bug in From<u64> impl for hash types using the wrong feature guard
* state-db: typo fixes
* use fmt::Result for 'fmt'
* state-db: typo fixes
* state-db: use the same pattern to pass the parameter
* state-db: follow the same style
* finalization for in_mem
* fetch last finalized block
* pruning: use canonical term instead of final
* finalize blocks in full node
* begin to port light client DB
* add tree-route
* keep number index consistent in full nodes
* fix tests
* disable cache and finish porting light client
* add AsMut to system module
* final leaf is always best
* fix all tests
* Fix comment and trace
* removed unused Into call
* add comment on behavior of `finalize_block`
Arkadiy Paronyan