1.7
-fixed several command blocks that were broken due to
 undocument changes in Minecraft 1.9 and later updates so
 the map is fully playable in 1.10.2 now
 (this fixes bugs like Diamond Doors not opening, Green
 Wool duplicating and additional sounds not triggering)

1.6
-changed a door in 14 because it could pull people out of
 bounds with the new derpy piston collision mechanics in
 the snapshots
-changed the piston-bridge-area at the end of 14 because of
 a sequence break using the new derpy piston collision code

1.5
-fixed yet another softlock in 12 (thanks to nqeron,
 gis4gamer and SliceThePi)
-slightly changed 9 for the people who think it is a good
 idea to place a Piggyback on the blue wool into a spot
 that is completely out of reach without the the Piggyback
-fixed a sequence break in 5 that allowed players who are
 unwilling learners to solve the stage in a way that doesn't
 teach them integral parts of the puzzle mechanics
-removed Herovine

1.4
-IMPORTANT: USE 15W49B OR NEWER FROM NOW ON
-updated particle commands to the new format in 15w49b
-slightly tweaked the "I shot my item out into the void by
 placing a block in it"-protection
-fixed an undiscovered softlock in 12 that is extremely hard
 to pull off and requires you to do something insanely dumb
 and illogical
-fixed a sequence break in level 13 that could open an exit
 to the void (thanks to JamesOfficial96) 

1.3.1
-forgot to place an obsidian block behind the level 7
 softlock fix which allowed you to break the fix with some
 very specific piston placement

1.3
-fixed a really funky softlock in level 7 that probably no
 one else would have found ever (thanks to mrcamoturtle)

1.2
-altered the softlock fix in level 12 so it actually works
 and doesn't make the intended solution more annoying ;)
-fixed an unintended trick in level 5 that could lead to a
 softlock if you follow it up with something extremely
 dumb (thanks to Jack the Reaper)
-disabled the output of a whole lot of command blocks that
 for some reason didn't have it disabled although they were
 NBT-copies of command blocks with disabled output

1.1
-fixed a softlock in level 12 (thanks to qwertyuiopthepie)