vorov2

Results 8 issues of vorov2

The following shouldn't be possible: ```swift let z = 10_0.0_ ``` Currently it compiles and works. Connected with #951

bug

Tuples to support "greater or equals" and "lesser or equals" operators.

enhancement

Consider adding `TotalHours`, `TotalMinutes` and `TotalMilliseconds` to `TimeDelta` type.

enhancement
under review

..at least in interactive mode. I would also suggest to allow user to omit `;` for the last statement (if next token is EOF). For example, this is how C#...