Use `mihi` (annotation meaning `my`, `for me`) as a marking of the end of a scientific name.

[dimus]

Connected to https://github.com/gnames/gnparser/issues/230

From quick looking at occurrences of mihi in BHL it seems that most of the time it designates the end of a canonical form, but in some rare cases includes authorship as well.

In some rare occasions mihi can be in the middle of infraspecific names as well, but it seem to be very rare.