0.006   2023-10-21  Released-By: PERLANCAR; Urgency: medium
        [cli xyplot]
        - Add option: --output-format.
        - [doc] Show how to change output format, force viewing using a
          browser or a certain program.
        - [doc] Add tips & tricks section in Description.
0.005   2023-10-21  Released-By: PERLANCAR; Urgency: medium
        [cli xyplot]
        - [ux] Allow one to multiple numbers (not just exactly 2) in each line
          of dataset file.
        - [ux] Check each number with Scalar::Util's looks_like_number().
        - [doc] Tweak Synopsis.
0.004   2023-10-20  Released-By: PERLANCAR; Urgency: low
        - No functional changes.
        [cli xyplot]
        - [doc] Tweak description: describe how the plot will be
          seen/saved.
        - [doc][ux] Show how to accept data from stdin.
        - [doc] Mention tchart & asciichart.
0.003   2021-07-02  Released-By: PERLANCAR; Urgency: medium
        - [incompatible change] Rename --datasets to --dataset-datas
	  (multiple --dataset-data).
        - Add option --output-file & --overwrite.
        - [ux] Use Desktop::Open instead of Browser::Open.
        - [bugfix] Plotting multiple datasets didn't work because we
	  didn't pass all the datasets to plot2d().
        - [ux] Change default style from 'points' to 'linespoints' which is more
	  visible.
        - [doc] Give more examples.
        - [ux] Allow --dataset-file to be given as arguments, for brevity
        - [ux] Better defaults for chart & dataset title.
        - [ux] Allow field separator to be comma or whitespace.
0.002   2020-12-10  Released-By: PERLANCAR; Urgency: medium
	[cli xyplot]
        - Allow multiple datasets, setting chart title, dataset titles, dataset
	  styles.
	- [bugfix] Didn't supply y values due to copy-paste mistake.
0.001   2018-05-07  Released-By: PERLANCAR
        - First release.