* introduce DataFile<T> to hide the LEN handling
use slices rather than vec<u8> where possible
* cleanup
* use DataFile<Hash> and not HashFile
* fix core tests
* replace header_by_height index with reads into the header MMR
* rustfmt
* cleanup
* cleanup chain tests
* fix locate_headers to stop on our max header
* fix the deadlock in comact_blocks_db...
* cleanup and docs/comments
* Cuckatoo size shift upgrade schedule
* Move the schedule into graph_weight instead of messing with min edge bits
* Cleanup and fixes now that we have an agreed upon schedule
* fixes to wallet cancel, repost, ensure stored transaction is updated with final signatures
* rustfmt
* add tests for reposting
* fixes to tests
* repost
* refactor header MMR to use regular backend
this lets us store header hashes in the mmr data file
the hashes in the hash file are "hash with index"
* rustfmt
* get_header_hash(pos) on header extension
* rustfmt
* cleanup
* cleanup
* comments
* cleanup
* fixup testelem so tests work
Update the command matcher for the server command to log a more helpful
message when it's called without a subcommand.
Before:
```sh
$ target/debug/grin server
:: Some(ArgMatches { args: {}, subcommand: None, usage: Some("USAGE:\n grin server [OPTIONS] [SUBCOMMAND]") })
```
After:
```sh
$ target/debug/grin server
Subcommand required, use 'grin help server' for details
```
* PoW context is now properly picked depending on the chain type,
edge bits and block height. Height const for T4 hard fork leaving
a couple weeks to have miners in place. Removed now unused Cuckoo context.
* Simplified block siphash
* Fix servers crate compilation
* Tiny bit cleaner block siphash. Maybe.
* Cuckatoo min edge bits update for T4 and mainnet
* Fix header size tests, Cuckatoo31 default means one more bit per edge
* Remove redundant param from verify_size
* block_accepted via adapter is now reorg aware
we skip reconciling the txpool is block is not most work
we skip reconciling the reorg_cache is not a reorg
* rustfmt
* logging tweaks
* rework block_accepted interface
* rustfmt
* rework reorg determination
* introduce BlockStatus to represent next vs reorg vs fork
* rustfmt
* cleanup logging
* log from adapter, even during sync
* default to minimum_confirmation = 10
pass in minimum_confirmations to grin wallet info
* rustfmt
* rebase against master
* fixup wallet tests
* fixup server tests
* remove receive_coinbase fn from wallet to wallet client
* start moving clients into separate mod
* rustfmt
* move wallet client + start listener into wallet 'clients'
* rustfmt
* refactor API to make it more modular and completely decouple sending
* rustfmt
* further decouple API from sending methods
* rustfmt
* remove wallet to wallet client trait
* rustfmt
* rename / refactor client + adapters
* rustfmt
* add adapter concept
* add midding node_clients dir
* add file and null adapters
* rustfmt
* remove receive from owner api
* factor out receiving slates into trait
* rustfmt
* adding listen trait
* rustfmt
* change listener to use trait
* rustfmt
* add test for file-based exchange
* replace http api send command
* rustfmt
* move controller out of libwallet and into top-level wallet dir
* rustfmt
* add moved controller
