Property accessors are not capitalized

[javiertuya]

While working on #119 I advertised that expressions like obj.prop do not capitalize the property accessor prop.
Doing capitalization here seems to be more consistent with the .C# style (like method capitalization), but it is a breaking change and it is not a very common situation that we can found. Please, check if you consider appropriate to make this change. If so, I can prepare a PR just after merging #120