Add slim website

[benjeffery]

Fixes #1

[bhaller]

LGTM

I guess we can merge and ask @bhaller to have a quick look to check once it's up?

Let me know what URL to look at, once it's public, sure. :->

[benjeffery]

Let me know what URL to look at, once it's public, sure. :->

https://tskit.dev/software/SLiM.html

[bhaller]

Let me know what URL to look at, once it's public, sure. :->

https://tskit.dev/software/SLiM.html

Thanks @benjeffery. Comments:

• The icon is nice, but it feels like it ought to also say "SLiM" to the right of the icon, or perhaps above – the page lacks a header/title relevant to the content.
• The links are great; my only quibble is that perhaps external links like this ought to have target="_blank" on them so they open in a new window, instead of leaving the current page?
• The code snippet on the right is actually not a complete SLiM model, it is abbreviated and would not run. Maybe that was done for the more compact display of info about SLiM, when on the larger software page or something? Anyhow, it's not a big deal, but if you wanted to show a complete script, you might put:

initialize() {
    initializeTreeSeq();
    initializeMutationRate(1e-8);
    initializeMutationType("m1", 0.5, "e", 0.001);
    initializeGenomicElementType("g1", m1, 1.0);
    initializeGenomicElement(g1, 0, 99999);
    initializeRecombinationRate(1e-8);
}
1 early() {
    sim.addSubpop("p1", 500);
}
2000 late() {
    sim.treeSeqOutput("out.trees");
}

• Also, oddly, I see a stray } at the far upper left of this page, on its own line above the white "tskit" header area. This is in Safari on macOS. Here's a screenshot:

• Since this is tskit website content, maybe it would be good to add "and it can output a tree sequence file at the end of simulation", or some such, to make the connection to tskit more clear?