[swift-evolution] Proposal: Make it easier to use unicode identifiers in Swift.

[Amir Michail]

In particular, allow the programmer to use text instead of unicode when convenient.

For example:

unicodealias alpha = α

let alpha = 5.0

print("α=\(α)”)

Every once in a while, the programmer could request that the IDE/editor transform the text names to their unicode counterparts as determined by unicode aliases throughout the source.