As i think that the development and history of games is really interesting, i was wondering what's the deal with 0.4? As you might know, it doesn't exist, so i was wondering if someone could shed some light on it. Was it supposed to come out at some point or was skipping it just a random mistake?

v0.5 was such an important update that it was deemed equivalent to two major updates, so 0.4 was skipped.

Okay, simple enough