* Introduce ChainHandlerCached which behaves like the old ChainHandler. Now Chainhandler.getBestBlockHeader() will read headers from the database
* Remove ChainHandler.blockchains field, now it's only available in ChainHandlerCached
* De-futurify ChainHandler.fromDatabase()
* Adjust logging
* Patch test case
* Use BlockHeaderDAO.chainTips when getting best header rather thean BlockHeaderDAO.getBlockchains(). Implement a helper method ChainHandler.toChainHandlerCached()
* Fix chain.md,wallet.md
* Make ChainHandler.getBestBlockHeader() consider time of header if chainwork is the same. Make test cases less strict on what header is the best header when both chainwork and time are the same on the eader
* Only execute callbacks on headers that are going to be created in the database, not all headers passed into ChainHandler.processHeadersWithChains()
* Turn up log level again
* Small optimizations, check if we have seen a header before before processing it in ChainHandler.processHeadersWithChains(). Fix FilterSyncMarker.toString(). Use ChainHandlerCached in Node
* Remove ChainHandlerCached in appServer, re-add it in Node.scala
* Update Oracle to use new TLVs
* Rename things to use new names, scaladoc, small clean ups
* Add descomposition tests, docs, sign numbers outside of range
* Make aesPassword option for wallet config
* Add to docs
* Make AesPassword optional
* Small touchups
* Fix for oracle server
* Fix docs
* Increase code coverage
* Remove requirement for ZMQ with bitcoind backend
* Add test, move poller to BitcoindRpcBackendUtil
* Add docs & logs, fix niche case
* Use AtomicReference, reset prevCount on failure
* Introduce 'FilterSyncMarker' to ChainApi, make it clearier what exactly the (Int,DoubleSha256Digest) tuple is returned from ChainApi.nextBlockHeaderRange()
* Fix doc
* Add scaladoc to FilterSyncMarker
* Rebase onto master, fix conflicts to use FilterSyncMarker
* Apply string factory to a bunch of easy things
* Refactor HDPath, ExtKey, and LnTagPrefix to use StringFactory
* Implemen StringFactory on LnHumanReadablePart, ScriptType, ServiceIdentifier
* Implement StringFactory on AesCrypt, NodeUri, AddressTag, PSBT, TxoState
* Fix failing tests, fix website compile
* Apply StringFactory to all ScriptOperations, ChannelState, Script Parsing
