MommaWatasu

I wrote the code only for learning and I haven't maintained it for long (since no one uses it). I created PR which contains my code from HorseML.jl. I hope...

I'm sorry suddenly. I haven't seen all the code, but I think the following changes will fix it. Erase the following part, https://github.com/JuliaGraphics/Tk.jl/blob/5d704d285ccffd4eb82ba783ec181d75f5d69b28/src/tkwidget.jl#L411-L413 and here https://github.com/JuliaGraphics/Tk.jl/blob/5d704d285ccffd4eb82ba783ec181d75f5d69b28/src/containers.jl#L117 How about changing it...

I added some test for hdbscan. But I'm sorry for not being able to write unit test for utility functions. If you want to write tests for them, you should...

I noticed that `erf` and `logpdf` aren't for HDBSCAN (but for Xmeans). I deleted them and updated test. And also, I added simple docs since Documentation workflow failed without it.

@alyst I applied all your suggestions. Is there anything else I have to fix?

@alyst I have one thing to apology. I found that the reason why the clustering result went wrong was my serious mistake about the algorithm. I fixed the algorithm and...