HISTORY.md: Update 2.3.0 notes

Author: EwoutH

HISTORY.md

@@ -9,7 +9,7 @@ There are two main new features:
 - The experimental cell-centric discrete spaces, as added in #1994. It allows having cells with not only properties but also active behaviors: the `CellAgent`. Its inspired by NetLogo's [patches](https://ccl.northwestern.edu/netlogo/bind/primitive/patches.html) but extend and generalize this concept further.
 - Full support for discrete event scheduling, as added in #2066. It allows scheduling events (like Agent actions) at any time, including non-integer timesteps.
 
-There are a lot of other features: The Jupyter visualisation now supports sliders, `NetworkGrid.get_neighbors()` supports a radius, `AgentSet.get()` can retrieve multiple attributes and there are now benchmarks to track Mesa performance during development.
+There are a lot of other features: The Jupyter visualisation now supports easier way to specify sliders, `NetworkGrid.get_neighbors()` supports a radius, `AgentSet.get()` can retrieve multiple attributes and there are now benchmarks to track Mesa performance during development.
 
 Finally, 2.3.0 stabilizes the `AgentSet` (including `model.agents`), making it the first experimental Mesa feature that is taken out of it's experimental phase.