Instead of "@in type name;" we now use "@in name: type;". This change
is done because of consistency with the rest of Eolian; pretty much
every other part of Eolian syntax uses the latter form.
This is a big breaking change in the .eo format, so please update your
.eo files accordingly and compile Elementary together with the EFL.
@feature
legacy set to null was used for every function to not generate a legacy
API. legacy_prefix set to null indicates no legacy has to be generated
for all the class.