Package: Replace custom eslint with semistandard

[fluvf]

I feel like the semistandard (and the standard) package is a good fit to the coding style of this project, and as it's a well maintained project, it'll lift the need to worry about maintaining eslint. Also includes a fix for the npm run * commands

[fluvf]

• I'll add the engines field to package.json, to partially enforce a minimum NodeJS version. Keeping the readme updated with a Requirements part should also help.
• I had the impression that the .vscode folder holds workspace specific configurations files. And unless the agreed upon editor for the entire project is VSCode I don't think it should be included in the source.
• I'll remove the build directory from .gitignore. There probably should be an issue added for replacing it with a build process later on

[fluvf]

Rebased and addressed your comments. Do you think the banner that was added in 7b1e18a is a good enough note about the coding rules?

[fluvf]

Ok, I did some more research about the .vscode folder and changed my opinion about removing it. Sorry this has been a bit of a process :D

I think only two files should be allowed in there, extensions.json and tasks.json. But instead of removing launch.json and settings.json a .default suffix would be added onto them. I don't think enforcing workspace settings onto others is a good idea, but I can see how the file exclusions would be necessary for the time being. I'd also think most have / want to have their own debugging commands, but offering sensible defaults might give an easier start.

But as this is a bit of an opinionated pull request, I split it into three parts:

• 40 with the general .gitignore cleaning

• 41 with the proposed .vscode folder changes (based on #40 )

• and this pr with the semistandard changes

[fluvf]

Did another rebase

[fluvf]

Rebased

[fluvf]

Getting this merged would be great, as it would automate much of my workflow

(also I will keep rebasing this until you either merge it or say no)

[fluvf]

Thanks!