This introduces a Mnemonic class for BIP39 (seed words)
validation as well as a HDMasterKey class with provides the
BIP32 & BIP43 support.
All tests went into the apputils unit test.
The core APIs in Flowee are quite low-level and especially combining
results from multiple services becomes tedius, verbose and thus
error-prone.
For this reason I wrote a new SearchEngine and related classes which
allow one to create a single compound request, submit it to the engine and
get a callback when it is done.
For instance one can now create a request for a transaction by txid and the
system will split this into a txid-lookup and the actual fetch for the
transaction.
Enough callbacks and options exist to be able to add a lot more details
this way in a simple manner.
For service applications that bind to networks (currently
only indexer) this allows users to pass the address:
0.0.0.0
to bind to. The effect will be that we find all the network
interfaces in the system and bind to all of them.
Notice that we already had "localhost" as an alias to bind to both
v4 and v6 loopback interfaces.
This new feature depends on optional dependency QtNetwork.
tomFlowee
TomZ