performance, ease of setup, installation, maintainability, etc.
all need to be considered for everything we introduce.)
+* lei: check + fix normalization of IMAP + NNTP URLs for mail sync
+
+* lei: persistent label application based on repeated import source
+
+* lei: support merging/renaming labels
+
+* lei: limit excessive completion results pausing bash(1)
+
+* improve test performance since 45s is too slow even with fork
+ avoidance in `make check-run'
+
+* improve UX for interrupted extindex/index operations with shard workers
+
+* index: support creating per-inbox external indices to ensure
+ {over,msgmap}.sqlite3 (and Xapian) files can remain on a
+ different FS than git repos.
+
+* support keeping CoW on btrfs for SQLite files,
+
+* investigate SQLite WAL feasibility with CoW enabled on btrfs
+
+* investigate fragmentation effects on btrfs even without CoW
+
+* adjustable commit interval for -index, -extindex and lei
+
+* SQLite VACUUM support on -compact
+
* general performance improvements, but without relying on
XS or pre-built modules any more than we currently do.
(Optional Inline::C and user-compiled re2c acceptable)