;doc: add version annotations for new features

[hamzashezad]

This PR aims to document the version a feature was introduced. As discussed in the Matrix room, *Added in <version>* will be prepended to;

1. heading, or if it doesn't exist
2. the description.

For v1.32,

• timedot supports letters syntax (feat:timedot: tagged time logging with letters #2116)
• print has beancount output
• match groups in csv rules (CSV import: support interpolating regex match groups into field templates #2009)
• negating matchers (feat: CSV rule negation #2088)
• tsv output support where csv is supported (add ssv, tsv output formats #869)
• print has a new option for controlling amount rounding (print needs more control over amount precisions #2085)
• --summary-only, multi-column balance reports (A wish for an "average-only" report #1012) (no docs present)

Dropped;

• import now works with -s/--strict (import can't check account names / account declarations not affecting sibling files #2113)
• https://hledger.org/1.32/hledger.html#part-3-reporting-concepts

[simonmichael]

Thank you!

What do you think should be the policy for maintaining these (how long do we keep them ?)

[hamzashezad]

Once a version is considered old enough, it's accompanying annotations can be removed. "Old enough" could be judged by when OS packages have caught up, e.g. nixpkgs, debian, etc. Looking at https://hledger.org/install.html#binary-packages, 1.30 is common, so maybe keep them for a fixed number of versions, say for the next two versions.

Personally, I'd keep unless they need to be removed because why bother.

[simonmichael]

@hamzashezad if you have time, maybe add these to the 1.32 manuals in hledger_site repo also, for https://hledger.org/1.32/hledger.html

[simonmichael]

(I wonder about replacing "added in" with "since" for brevity)

[hamzashezad]

@simonmichael sure, I can add to the hledger_site repo as well. Can you guide me how the files are generated?

"Since" does sound better.

[simonmichael]

1.32/* were generated by me at release time with make snapshot-1.32 but are just normal files now, you can commit to them. Thanks.