MasterArcher12

New article on Minecraft.com, about inefficient stairs, Found a fatal typo.

The numbers indicate what version they were added in

i'll talk about those colors and why some blocks don't have version numbers.

definitely a typo

the above numbers indicate what version they were added

red means the block wasn't available at 1.4 (number indicates added version)

yellow means the block was available, but its height hitbox was unusable in the situation at the time, and is only useable in later version (number indicate changed version)

green means the block wasn't available, but it existed in a different form, so the other block would be usable instead. (number indicates added version)

explanation for yellow blocks

Lily pads were shorter until 1.9

Snow couldn't be stacked until 1.5

Boats used to be smaller until 1.9 (debatable, since it uses 1.13 waterlogging mechanics to put the boat in said position)

explanation for green blocks

Orange beds weren't available until 1.12, a red bed could be used instead

Acacia logs (called "wood" back then) weren't available until 1.7, Oak, Birch, Spruce or Jungle wood/logs could be used instead (or any other solid block that is the height of a full block (1m³))