Ezcharts

Added
- Nested bar charts by setting `nested_x=True` in `barplot()`.
- SeqSummary ability to read precomputed fastcat histogram data.
- Upgraded sample card functionality.

Fixed
- Regression causing empty line or scatter plots when no `hue` variable was provided.
- `lineplot()` and `scatterplot()` not handling the `palette` argument correctly.
- Mixed `start_time` offset bug in SeqSummary.

Fixed
- `lineplot()` and `scatterplot()` failing with numerical `hue` values.

Fixed
- Spuriously scrolling to top of page when clicking on ellipsis in pagination links below data tables.

Added
- Total yield as additional metric below title in `fastcat.SeqSummary.base_yield_plot()`.

Fixed
- Font family declaration for Ubuntu
- VersionList output

Fixed
- Regression squishing ECharts plots when a different tab is selected.

Fixed
- List group colour