cobra support multiple return values

[hopscc]

(Feature placeholder)

Multiple return values on methods using simple and obvious syntax (slight extension to existing) for method return type declaration and return values.

a,b = .fn(123, 'xyz')
assert a.typeOf == int
assert b.typeOf == String

def fn(i as int, s as String) as int, String
     # lotta calc
     return i, s

See  forum Topic Multiple Return values

[hopscc]

implementation patch and tests.
Includes new typed element container - Bag (up to 4 elements).