Added
When using the `mpl_ascii` backend then `plt.show()` will print the plot as a string consisting of basic ASCII characters. This is supported for:
- Bar charts
- Horizontal bar charts
- Line plots
- Scatter plots
You can also save figures as a text file. You can do this by using the savefig `figure.savefig("my_figure.txt")` and this will save the ASCII plot as a txt file.