* Draw a distinction between JSON and JSON Lines formats
* Add JSON Lines to on-line help example
* Have JSON format default to --jlistwrap and --jvstack
* Update test cases for --jlistwrap output for JSON output format
* Have JSON format default to --jlistwrap and --jvstack for --{X}2j as well
* Make --jlistwrap / --jvstack as legacy flags, since now --json and --jsonl
* Add --c2l, --l2c, etc. command-line flags
* docmods for JSON Lines
* Update regression-test cases for JSON / JSON Lines distinction
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