Clarifications related to maybe keyword

[UltraGreed]

The description of usage of the keyword maybe seems vague, so I propose the following extension of docs:

maybe may be maybe, may be true, and may be false.

print(maybe == maybe)! // maybe
print(maybe == true)! // maybe
print(maybe == false)! // maybe

If statement with maybe in its condition may or may not be executed.

if (maybe) {
   print("Yes")! // this may be executed
} else {
   print("No")! // this may be executed too
}

This approach fits the concept of storing a boolean in 1.5 bits and I think is idiomatically consistent with the DreamBerd language.

[UltraGreed]

The issue has already been raised in #235 and some duplicates