postfix is/exists operators
Tuple: fixed segment/span
Tuple: added equals and string
Updated tests with M5 syntax changes
Added ArrayIterable for M5 syntax
Merge branch 'm5syntax-stef' into m5syntax
Tuple: fixed syntax mistakes
Merge branch 'm5syntax' of github.com:ceylon/ceylon.language into m5syntax2
improve zip test messages
update printing of tuple comprehension test
Merge branch 'm5syntax' of github.com:ceylon/ceylon.language into m5syntax2
Update with new seq args syntax
Update comprehension invocations with new m5 syntax
Add more info to assertion failure messages
more info in assertion failure messages
Added `empty` toplevel object
Fixed Java implementation of `Empty`
Fixed some more problems with `Empty`
Make LazySet at least buildable (but not usable) until we have reified generics
Added `ceylon.sdk` rule that we should be able to use at some time to compile the language module