Bump UnicodePlots to version 3

[allomulder]

Hello,

Just added version 3 of UnicodePlots to Project, and it seems to be working the same as before. I tested it on the example from DynamicalSystems documentation.

Attaching screenshots for proof:

1. Code output from my main environment containing current stable versions of DynamicalSystems and RecurrenceAnalysis:
   
2. Code output from the environment with bumped UnicodePlots version:
   
3. Project status of that environment:
   

[Datseris]

Thanks, seems LGTM to me! Can you also please bump minor version (second number) of the RecurrenceAnalysis version so that I tag a release immediatelly after merging your PR?

[allomulder]

@Datseris done, bumped it to 1.9.0

[Datseris]

@allomulder it seems there was some sorts of f**k-up in my commits to master and now tests do not pass. I'll push a fix to the tests in this PR and merge, but I can't promise when this will happen exactly.

[Datseris]

actually I'm merging this in now, as your changes are valid. I'd still have to fix test before I release a new version though!

[allomulder]

@Datseris That's okay, thank you! I was a bit surprised actually, when I cloned this repo and VSCode showed me about 100+ messages that something is wrong. Hopefully it won't be too hard to fix it! If I find the time, maybe I'll also look into this and try to test it, but can't promise it though.

If I do, however, I'll make another PR and notify you.

[vancleve]

any chance this could make it into a new release sometime soon?

[Datseris]

Please use master branch until then, we need a bit more time to make any release. add RecurrenceAnalysis#master