Allow control of marker size (and other aspects of plt.scatter) (#78)

* allow control of marker size

* allow data_label_filter arg

* Revert "allow data_label_filter arg"

This reverts commit 2764be6.

* remove marker size arg, replace with scatter_kwargs

* add default args

* add default args to docs

cinnabar/plotting.py

@@ -35,6 +35,7 @@ def _master_plot(
     bootstrap_x_uncertainty: bool = False,
     bootstrap_y_uncertainty: bool = False,
     statistic_type: str = "mle",
+    scatter_kwargs: dict = {"s": 10, "marker": "o"},
 ):
     """Handles the aesthetics of the plots in one place.
 
@@ -97,6 +98,8 @@ def _master_plot(
     statistic_type : str, default 'mle'
         the type of statistic to use, either 'mle' (i.e. sample statistic)
         or 'mean' (i.e. bootstrapped mean statistic)
+    scatter_kwargs : dict, default {"s": 10, "marker": "o"}
+        arguments to control plt.scatter()
 
     Returns
     -------
@@ -166,7 +169,7 @@ def _master_plot(
         elinewidth=2.0,
         zorder=1,
     )
-    plt.scatter(x, y, color=color, s=10, marker="o", zorder=2)
+    plt.scatter(x, y, color=color, zorder=2, **scatter_kwargs)
 
     # Label points
     texts = []