Log Message:
www/libreddit: update to 0.29.4

What's Changed
 - Reuse hyper client. by @wsy2220 in #727
 - Mark search query as safe on Prev/Next button by @wsy2220 in #731
 - Make gated subreddits accessible by treating them as quarantined by @domve in #722
 - Add NetBSD install by @0323pin in #720
 - Update tempfile to v3.4.0. d3b4f4e