changed way relative frequency is calculated

[Vilhelm-Ian]

Sorry mortii it doesn't pass the tests. I didn't intend this to be the pull request. If you are not in a hurry I can take care of them tomorrow

[mortii]

@Vilhelm-Ian no worries! I don't have time to look at it today so that's completely fine.

[mortii]

@Vilhelm-Ian actually, you don't even have to fix the errors, I'll make some changes to the morphemizers anyway, so 'll just merge your changes as is into a dev branch tomorrow :+1:

[mortii]

Thanks!

[mortii]

@Vilhelm-Ian this change was really good, the readability report now has a better representation of how well one knows the text in the file.

I merged your changes with some extra stuff in https://github.com/mortii/anki-morphs/commit/a43ea184523fe721d4d61969109de9ac3b4eb0a3, mainly:

• morhemizers produce morphs in lists, this gives a better results all around, including recalc
• I made custom QTableWidgetItems so that the column sorting actually works, previously they sorted by string, which gave weird results
• I also made the changes work on the percentages tab and not just the numerical one.

Thanks!