Introduce second-precision feature to Bartib

[johnDeSilencio]

What?

This PR introduces a second-precision feature to Bartib that allows users who compile the binary from source to record timestamps in their log file and perform report calculations with a precision of seconds instead of a precision of minutes, as is the default.

Why?

I use Bartib in my post-checkout git hook so I can capture the amount of time I spend on each branch over the course of the day. Sometimes, I have to flip between branches quickly. I see a lot of the following timestamps in my log file:

2025-06-12 23:24 - 2025-06-12 23:24 | // ...
// ...
2025-06-12 23:28 - 2025-06-12 23:28 | // ...
2025-06-12 23:28 - 2025-06-12 23:28 | // ...
// ...

Those logs entries effectively become "lost" minutes, if I am not mistaken. That might not seem like much, but over a period of several months using Bartib, that can amount to potentially hours worth of "lost" minutes.

How?

I didn't want to alter the default timestamp precision for all users, so I put these changes behind the feature gate second-precision and preserved all of the old code.

Breaking changes?

The only thing that might be considered a breaking change is the changes I made to data::parse_timepart(). I added some additional logic to detect if there is a precision mismatch. For example, in the following screenshot, bartib was compiled without the second-precision flag but has encountered a log with timestamps that have second precision:

`bartib_log.txt`

2025-06-12 23:23:12 - 2025-06-12 23:23:28 | my project | my description
2025-06-12 23:24:01 - 2025-06-12 23:24:20 | my project | my description
2025-06-12 23:24:38 - 2025-06-12 23:24:59 | my project | my description
2025-06-12 23:25:44 - 2025-06-12 23:25:54 | my project | my description
2025-06-12 23:28:00 - 2025-06-12 23:28:14 | my project | my description
2025-06-12 23:39:17 - 2025-06-12 23:39:25 | my project | my description
2025-06-12 23:39:25 | another project | another description

---

I want to thank you for all of the hard work you put into this crate! This has got to be one of the best organized crates I've seen yet. I was able to make these changes in less than two hours on a single weekend - and everything worked on the first try. I know no higher honor I can given an open source maintainer than that.

Let me know if there are any changes that you'd like me to make! I'm open to feedback :)

Cheers,

• Nick

[johnDeSilencio]

I have to head to bed now, but I'll be back on tomorrow to post functional test results!

[nikolassv]

Thank you for your work! This is something I would have never thought of but I can understand the usecase. I hope I will be able soon to have a look at your changes and merge them.

[johnDeSilencio]

Not sure how thorough of testing you're looking for, but here's a short clip of me using Bartib with second precision in the timestamps:

compressed_bartib.mp4

Let me know if there's any other functionality you want me to test :)

[nikolassv]

Thanks, this looks good!