Implement Section support in filters.

[Zilljian]

I found this cli tool really useful. But it lacks a couple of features that I'd like to use.

In particular, project's sections are highly handy when the project is more than just a list. Also, it helps to follow GTD approach.

In this PR I add simple support for section filtering. It can be used as following #Work & /Task.

[Zilljian]

Hi @kenliu!

I see this repo is inactive for some time. Are you still developing this project?

I found your tool pretty interesting and wanna make a couple of improvements. I can work in this repo or in my own fork if you are not actively developing.

What do you think? :)

[kenliu]

Hi, the project is still active, but maintainer activity is slow due to limited bandwidth. Definitely appreciate the contributions, please continue to submit PRs!

[Copilot]

Copilot reviewed 8 out of 10 changed files in this pull request and generated no comments.

Files not reviewed (2)

• filter_parser.y: Language not supported
• go.mod: Language not supported

[Zilljian]

Cool! Thank you for response.

Then have a glance on the changes when you have time :)