Can we have some other charts, not only Pie type charts

Is your feature request related to a problem? Please describe. while use mermaid with markdown, only have Pie type chart to use

Describe the solution you’d like hope have some other type to use, such as bar chart, line chart

Describe alternatives you’ve considered More and more people use markdown and mermaid in modern editor, I think rich chart type will support people to use markdown better. And it will be easier to obtain a bar chart or line chart in markdown than in Word or Excel. even, it can be a revolution against MS Office Word

Additional context maybe chart grammar like below

chart
  type: bar
  xAxis: [2019，2020，2021]，
  yAxis: [150,   220,    300]

and I found something interesting called Vega https://vega.github.io , maybe we can learn from that.

[jacob-shuman]

I love sequence, pie, git charts etc, but it would open up so many possibilities for me to be able to generate a simple bar chart with mermaid!

[akutz]

Is there by chance a branch with this work in-progress we could use if we just needed something simple?