Document @since in the Rules' Wiki

[paulo-ferraz-oliveira]

At least for the latest versions available, in https://github.com/inaka/elvis_core/wiki/Rules. Kind of like @since 0.7.0.

Try to find a way to properly document the past for the other rules.

@elbrujohalcon, should we get rid of "Old format" in the Wiki? We can probably create a section to help developers migrate, but I think the semantics used (these days, using maps) is pretty self-explanatory.

[elbrujohalcon]

Yeah… the old format is clearly not used anymore anywhere… We could remove it from everywhere.

[elbrujohalcon]

And @since seems like a really nice thing, but retrofitting it to account for all rules… I think it would be too much work for no gain. We can start with @since 0.7.0 for all rules.

[paulo-ferraz-oliveira]

Yeah… the old format is clearly not used anymore anywhere… We could remove it from everywhere.

Done. There's old_configuration_format (which is "by default") so it shouldn't be hard for consumers to know there's something wrong.

[paulo-ferraz-oliveira]

As for since I went back to 0.4.0 (I just compared tags, in Git, so it was easy) and now we have it: https://github.com/inaka/elvis_core/wiki/Rules/_compare/7c99460d686073000d98b968ecb89cf507ba9359...fb84866eed10a4691cdd280aeb6def100a70f1a1.