Fix margin (#44)

* forcing draw to ensure UltraPlot is correctly visualized

* added comment and merging

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Co-authored-by: Matthew R. Becker <beckermr@users.noreply.github.com>

Author: cvanelteren

ultraplot/figure.py

@@ -1870,6 +1870,8 @@ def savefig(self, filename, **kwargs):
         # do not want to overwrite the matplotlib docstring.
         if isinstance(filename, str):
             filename = os.path.expanduser(filename)
+        # NOTE: this draw ensures that we are applying ultraplots layout adjustment. It is unclear what changed with ultraplot's history that makes this necessary, but it seems to cause no issues. Future devs, if unnecessary remove this line and test.
+        self.canvas.draw()
         super().savefig(filename, **kwargs)
 
     @docstring._concatenate_inherited