Merge pull request #217 from hyanwong/patch-37

Enable tskit 0.5.4 option

Author: benjeffery

popgen.md

@@ -208,7 +208,7 @@ labels = { # Label samples by population
 
 tree.draw_svg(
     size=(800, 500),
-    # canvas_size=(800, 520),  # Make room for labels - only valid in tskit >= 0.5.4
+    canvas_size=(800, 520),
     node_labels=labels,
     style="".join(styles),
     y_axis=True,
@@ -337,4 +337,4 @@ genomic data stored as a tree sequence.
 
 The rest of the {ref}`tutorials<sec_intro>` contain a large number of examples which
 are relevant to population genetic analysis and research. You can also visit the
-[learning section](https://tskit.dev/learn/) of the [tskit website](https://tskit.dev/).
+[learning section](https://tskit.dev/learn/) of the [tskit website](https://tskit.dev/).