* reader
* record writer
* pkg/output/record_writer_dcf.go
* test/input/test.dcf
* test/cases/io-dcf/
* pkg/cli/option_parse.go
* make fmt
* make dev
* docs and `make dev`
* docs/src/proposal-yaml-io.md
* initial step
* Add `--y2c` etc
* test cases
* docs
* more testing
* more
* more test cases
* git rm docs/src/proposal-yaml-io.md
* make dev
* ylistwrap -> yarray
* 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