Removed `--include-metrics` / `--include-params` and
`--exclude-metrics` / `--exclude-params`.
Removed `--no-timestamp` . Can be done by `--drop Created`.
`--drop` and `--keep` operate directly on the table columns.
`--keep` does not perform any filtering. It's only used
to specify columns to keep despite the other filtering.
For example `--only-changed --keep foo` will prevent
`foo` from being removed by `--only-changed`.
Another example, `--drop train.* --keep train.dropout`
will remove all columns matching `train.*` except for
`train.dropout`.
Closes#7079Closes#7080
Pre-requisite for #6434
David de la Iglesia Castro
43953ace53