https://mojang.com/2014/07/minecraft-snapshot-14w27a/
Update: 14w27b was released to fix some crashes and bugs.
I never trusted Hoppers. Always moving items around, silently, biding their
time. And now look at what they’ve gone and done, we have hoppers all over
the place! Hop. Hop. Hop.
Notable Changes:
Bunnies!
Bunnies bunnies bunnies.
It’s a secret to everybody!
More rewrites, optimizations & bug fixes.
Improved debug world type.
Recalibrated the quantum flux regulator.
Fixed Bugs:
[Bug MC-15202] – Player can be pushed around by mobs while on horseback
[Bug MC-16387] – Nether Fortresses are ignoring "Generate Structure"
setting at world creation
[Bug MC-26987] – Horse tries to breed with another horse that is not yet
in Love mode
[Bug MC-29558] – Double plants cannot be broken by placing a different
block on the block it occupies
[Bug MC-29803] – Statistics doesn't resize / Buttons missing after resize
[Bug MC-30002] – Falling / Landing particles / particles applied to the
player centered on the block rather than the player
[Bug MC-36489] – Mooshrooms lose their name (from name tag) when sheared
[Bug MC-37416] – when the disk is put in jukebox the name does not appear
And many more that weren’t reported on the bug tracker!