add unamed parameter type to references, fixes #423

[Pangoraw]

Hi,

This is a fix for issue #423 where methods with unnamed arguments where not added as referencers to the parameters' type. I fixed it by adding a special case in the explore_funcdef function.

This is my first try at touching a serious julia codebase so I will be happy to fix any comments

Thanks 🎈

[fonsp]

Very nice! Thank you!

[fonsp]

I've added some tricky tests, let's see if they pass!

[Pangoraw]

One is failing, I will take a look

[fonsp]

Thanks! If it's not simple to fix, then we will just merge this PR, and add the failing test as an issue for later.

[Pangoraw]

Alright, it did not seem related. The ... params were send back to explore! (as a default for unknown expressions) were they would be treated as traditional reference to the variable. I added a case to "unwrap" the ... and recurse on it.

Should i make another commit or keep it in the same ?

[fonsp]

Awesome, thanks again! You're right that this was a separate issue, so I'm happy that you fixed this too 😊

I added some more tests for the splatting operator (...), they already passed locally so it's probably all good!