Add ImPlotSpec and remove existing plot item styling mechanisms

README.md

@@ -139,19 +139,19 @@ A: ImPlot plotting functions accept most scalar types:
 
 **Q: Can plot styles be modified?**
 
-A: Yes. Data colormaps and various styling colors and variables can be pushed/popped or modified permanently on startup. Three default styles are available, as well as an automatic style that attempts to match you ImGui style.
+A: Yes. Three default styles are available, as well as an automatic style that attempts to match you ImGui style. You can define any custom style as well. Plot items are generally styled for you based on the current colormap, but can be customized on an individual basis.
 
-**Q: Does ImPlot support logarithmic scaling or time formatting?**
+**Q: Does ImPlot support non-linear axis scaling? Time formatting?**
 
-A: Yep! Both logscale and timescale are supported.
+A: Yes. Logscale and symmetric logscale are provided out of the box, and you can define custom axis scales as well. Time scale with microsecond precision is also available out of the box.
 
 **Q: Does ImPlot support multiple y-axes? x-axes?**
 
 A: Yes. Up to three x-axes and three y-axes can be enabled.
 
 **Q: Does ImPlot support [insert plot type]?**
 
-A: Maybe. Check the demo, gallery, or Announcements ([2020](https://github.com/epezent/implot/issues/48)/[2021](https://github.com/epezent/implot/issues/168))to see if your desired plot type is shown. If not, consider submitting an issue or better yet, a PR!
+A: Maybe. Check the demo, gallery, or Announcements ([2020](https://github.com/epezent/implot/issues/48)/[2021](https://github.com/epezent/implot/issues/168)/[2022](https://github.com/epezent/implot/discussions/370)) to see if your desired plot type is shown. If not, consider submitting an issue or better yet, a PR!
 
 **Q: Does ImPlot support 3D plots?**