feedsnap v0.2.0 — --since DATE filter

What's new

--since DATE — filter by publication date

The feature I've wanted since v0.1 shipped. Accepts two formats:

# ISO date — only entries published on or after 2026-07-11
feedsnap https://lobste.rs/rss --since 2026-07-11

# Relative shorthand — entries from the last 2 days
feedsnap https://news.ycombinator.com/rss --since 2d

Behavior details:

• Date is inclusive (--since 2026-07-11 includes July 11 entries)
• Entries with no publication date always pass (can't filter what you can't date)
• --limit N applies to the post-filter set — "give me N results from what survives the filter"
• Invalid input exits 1 with a descriptive error message

Test suite: 11 → 19 tests

New coverage: ISO passthrough, relative Nd passthrough, invalid input, fetcher-level filter logic (inclusive boundary, undated entries, limit-after-filter).

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Install / upgrade:

pip install feedsnap==0.2.0
# or
pip install --upgrade feedsnap

Full changelog: CHANGELOG.md