Add named wikilink processing

[hi-learn-triz-and-usit]

Let me know if there are any issues.

I didn't add tests because there are currently no tests for parsing the wikilinks anyway.

This is technically a breaking change if anyone has pipes in their wikilinks, but I don't think that's a huge problem.

There's also both styles of [[url|name]] and [[name|url]] in use; I went with the former because it works better with the defaults in the recommended VSCode configuration.

Resolves #373

[hi-learn-triz-and-usit]

Could you update the docs to mention this? https://neuron.zettel.page/linking
Also please update CHANGELOG.md and the version in neuron.cabal (1.9.x.y -> 1.9.(x+1).0)

Done.

Anything else I missed?

[srid]

@hi-learn-triz-and-usit Yes, that's good.

I tested this locally, but it doesn't work? [...]

[srid]

Oops! Nevermind, PEBKAC. I didn't even checkout your branch. :-P

[srid]

I'd think sometimes the user might want to use "foo | bar" as the custom text, so in theory we can allow everything to the right of the first | as the custom text. But let's merge the PR in its current state since this is an improvement.

In emanote, as an aside, this is how we do it (it also obviates the dependency on split): https://github.com/srid/ema/blob/d8e14ab63a9b25f44591c38c929b04b957f1546d/src/Ema/Helper/Markdown.hs#L206-L211

[srid]

The operator use of fromMaybe here is unorthodox. For future reference, I'd just write fromMaybe url name.

[samwalls]

I found that this breaks if the link is inside a markdown pipe table. However it can be fixed by using this syntax: [[my-page\|my-text]]. The use of tables should maybe be documented somewhere if not already, and with this information.

Example

|test column 1|test column 2|
|-------------|----------------------|
| apple       | [[my-page\|my-text]] |

[hi-learn-triz-and-usit]

@samwalls I think that what breaks is not the parsing of the wikilink but the parsing of the table, which I believe is Pandoc's responsibility. Would you mind checking if the same thing happens in emanote?