Mixed documentation for simrel function

[khliland]

In the "umbrella" function simrel(), the input and output descriptions are a bit misleading.

1. The q argument is only described in form of its content, not its role/function,
2. and the comment "for details see Notes" seems to be a remnant from unisimrel() as simrel() has no Notes section.
3. The list of return variables might be correct for one of the simrel-methods that this function branches out to, but for instance, unisimrel() only contains a subset of the return values.

Additional suggestion: "See also" pointing to the specializations would be useful and maybe an example or pointer to the other examples.

Otherwise, excellent package!

[therimalaya]

Thank you for pointing out the problems. I will fix them as soon as possible (probably within this month). I have prepared a new version of simrel, which is a bit more functional by separating model properties and data, but it will not be compatible with this current version in terms of output. Let's see if I can keep it in a different repository or another branch of this repo. But the suggestion you have pointed out will be helpful in both situations.