Which lua versions for which renoise versions?

hi, does someone have a set of information on which lua api versions are used for which renoise versions?
say, v2.8 renoise, which lua api version is used there?

Renoise V3.0 = LUA API Version 4 Lua API version 3 to 4 changes - Renoise 3

Renoise V3.1 = LUA API Version 5 Renoise 3.1: Changes from Lua API version 4 to 5

Renoise V3.2 = LUA API Version 6 ► Lua API version 5 to 6 changes - Renoise 3.2

Renoise V3.?? = LUA API Version 6.1 ✒ Lua API version 6 to 6.1 changes

i found this kinda stuff but so what’s the version for lua api v6.1?

what is lua api version 2? where did lua api version 3 come from, what version is that for?
etc.