Nonce, Inc. (v1.6.2)

Nuked: Please see https://github.com/ethereum/go-ethereum/releases/tag/v1.6.4.

This is mostly a maintenance release with new features added around transaction handling:

• Server-side tx nonce assignment works for concurrent RPC calls to sendTransaction (#14516).
• The transaction pool accepts transactions with any gas price (#14442).
• (potentially breaking change) Key imports enforce private key length of 32 bytes (#14502). This affects the personal_importRawKey RPC method.

Previously hidden transaction pool defaults can now be set:

--txpool.pricelimit value    Minimum gas price limit to enforce for acceptance into the pool (default: 1)
--txpool.pricebump value     Price bump percentage to replace an already existing transaction (default: 10)
--txpool.accountslots value  Minimum number of executable transaction slots guaranteed per account (default: 16)
--txpool.globalslots value   Maximum number of executable transaction slots for all accounts (default: 4096)
--txpool.accountqueue value  Maximum number of non-executable transaction slots permitted per account (default: 64)
--txpool.globalqueue value   Maximum number of non-executable transaction slots for all accounts (default: 1024)
--txpool.lifetime value      Maximum amount of time non-executable transaction are queued (default: 3h0m0s)

For other minor changes in this release, see the 1.6.2 milestone.

Binaries and mobile libraries are available on our download page.