P2Pool release 15.0 - HARDFORK - Upgrade URGENTLY required.

[chainquery]

P2Pool release 15.0 - commit hash: 86bbdac7eaaa03438e71ee9dcb11898c7b2b8bdf

HARDFORK - Upgrade URGENTLY required in the next few days.

Windows binary: http://u.forre.st/u/ovqxauzj/p2pool_win32_15.0.zip
Windows binary signature: http://u.forre.st/u/wynjbvpn/p2pool_win32_15.0.zip.sig
Source zipball: https://github.com/forrestv/p2pool/zipball/15.0
Source tarball: https://github.com/forrestv/p2pool/tarball/15.0

Changes:
* BIP65/block version 4 compatibility
* Requires Bitcoin >=0.11.2 (for BIP65 compatibility)

BIP65 will take effect in the next week and in order for P2Pool to continue working without producing invalid blocks, everyone needs to upgrade. At 50% of our hashrate upgrading, P2Pool instances will start displaying a warning saying that an upgrade is required. Reaching that point as quickly as possible is very important. And then, at 95%, users that have not upgraded will be excluded. If non-upgraded users aren't excluded before BIP65 takes effect, P2Pool users will be subject to paying other users for invalid work - effectively a withholding attack.

So, please upgrade to 15.0 now and also tell everyone else to.