Changes to the default mempool allocation size now documented.
Provides users with guidance on the mempool implications of -blocksonly
mode, along with instructions on how to re-enable old behaviour.
When -blocksonly is set to 1, it interacts with the -walletbroadcast
parameter and sets it to 0 if it has not been set already.This behavior
is not captured by the current documentation, which claims that -blocksonly
does not impact any wallet transactions.
Update the max number of outgoing peers from 8 to 10, due to the
addition of two -blocksonly peers.
Tim Ruffing