- Fix bitcoin-overview image (P2PKH address was used as "private key")
- Use receiving and sending images from Bitcoin Design Guide
(https://bitcoin.design) under CC-BY license
(https://github.com/BitcoinDesign/Guide/blob/master/LICENSE)
- Mention changeless outputs, especially as used in transaction-chain
image
- Include brief mention of best blockchain in paragraph about the cost
to miners for confirming conflicting transactions
The commit ab5ae32bae is the last commit
for the second edition, so all changes since then are dropped except for
several commits for the third edition authored by Andreas Antonopoulos.
No attempt is made to remove CC-BY-SA or other licensed content present
in the already-published first or second editions.
This revert may itself be reverted for versions of the book published
under CC-BY-SA.
