Receive-chain gap 200 and change-chain gap 100 everywhere a chain is
walked: daemon /balance (new gapInternal, cap 200), Blockbook xpub
queries, history ownership set, and the signing-key derivation in Send so
anything the scan finds is spendable.
Trailing-zero trimming now applies to the hero balance and assets row
only; history, details and the send review keep eight decimals. The hero
number no longer wraps — long balances step down in size.
Price feed defaults on; existing configs flipped once via the v3 marker.
The BreadWallet-based DigiByte Android/iOS apps used HMAC-SHA512 key
"DigiByte seed" (not BIP32's "Bitcoin seed") when turning the BIP39 seed
into the master node, so the same 12 words give a different key tree and
a standard m/0' scan finds nothing. rootFromSeed() takes an optional HMAC
key; balance scan, history, send and the derivation-path search now
cover m/0' under both keys, and user-added extra paths carry the key.
