Update Utils.java

[Sublimis]

Use double-s instead of float-s to minimize rounding errors that can lead to axis labels saying e.g. "9999.999" instead of "10000". There's really no excuse for using float-s here, and probably throughout much of the rest of the code, too. Maybe this remark could be taken into consideration to prevent similar problems in the future.

[Paget96]

I really like this library and using it in my apps, I would like to call people to continue with this awesome thing. I have forked the repo and started working on it! So I am ready as well to accept pull requests, I'll notify other people from here as well!
Would be more than happy if we continue with this awesome project.

Code is full kotlin now!

Make your pull requests here:
https://github.com/Paget96/MPAndroidChart

[hannesa2]

@Sublimis
I did a test of this AppDevNext#637 and there you'll see what happens as screenshots.
Do you have maybe better show cases ?

[Sublimis]

@hannesa2
Only found this one old screenshot that shows incorrect rounding on the horizontal axis (1.99k, 3.99k, etc), before this PR fix was applied. Maybe this helps.

[hannesa2]

@Sublimis
I tested it in my recent version 4.0 it looks fine in my point of view https://github.com/AppDevNext/AndroidChart/pull/643/files#diff-b24e02fdba97f1f3339bf857ee57d453e5a7c803ef28a042fe8cce1501928cc5

No patch is needed there