patch-release
Add new file doc/F2FS.txt, containing notes on the way SQLite uses the F2FS atomic commit feature.
Fix a minor typo in the previous.
Fix typo in the json-enhancements.md document.
Fix typo in the Lemon documentation.
Fix all known instances of 'repeated the' style typos in comments. No changes to code.
Add doc/testrunner.md, for documenting the testrunner.tcl script.
Fix minor typos in the trusted-schema.md document.
Add file doc/vdbesort-memory.md, containing notes on the way vdbesort.c uses heap memory.
Refactoring the VFS-SHM methods used by WAL. This version compiles and runs non-WAL test cases but crashes and burns on wal.test.
Add new file doc/wal-lock.md, containing notes on wal-mode blocking locks.