The documents, the example config and the help text are rebased onto the
fourteen fixes on next. The sentences those fixes made false now match the
code: an unknown config key, a relative index_path and a value that is not a
size are refused when the config loads; a backup saves the destination in the
local index only after it writes the marker file, and no other command saves
it; a backup skips the local index, its side files and the lock file; a binary
from go install reports its tag and counts as a release; a declined deletion
prompt exits 1 with "deletion not confirmed"; the S3 keys are set before an
s3:// storage_url. No document quoted the old messages for an unknown snapshot
ID, a wrong private key or an unreadable blob.
Model: fable-5-1