missing API functions

[Elkano]

I think there are still a few API functions missing, so it would be nice if you could add them in order to avoid "attempt to call global 'function' (a nil value)"

List of missing functions I found so far:

• GetTime()
• time()
• UnitName(unit)

[Elkano]

the following calls still lead to "attempt to call 'x' (a nil value)"

• CreateFrame
• debuginfo
• debugstack
• GetAddOnMetadata
• GetBuildInfo
• GetNumAddOns
• GetScreenWidth
• GetTime
• time
• UnitClass
• UnitFactionGroup