Versioning

Version management. 3 proposals.

BIP 8: Version bits with lock-in by height: Complete. An alternative way to activate soft forks (backward-compatible rule upgrades) that measures time in block counts rather than clock timestamps. It also adds an option to guarantee activation at the…
BIP 9: Version bits with timeout and delay: Deployed. Lets miners signal readiness for several soft forks (backward-compatible rule upgrades) at once by setting individual bits in each block's version number. An upgrade locks in once enough blocks…
BIP 14: Protocol Version and User Agent: Deployed. Separates the version of the Bitcoin network protocol from the version of any one program, and adds a "user agent" label identifying the software a node runs. As alternative clients appeared, this…