Bug/fixecdfplot (#18)

* doc: removed bitbucket pipeline [ci-skip]

* chore: moved pipeline and created reduced conda env spec

* fix: fixed dataframe method in ecdfplot

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Co-authored-by: Julien Lerat <ler015@csiro.au>

hydrodiy/plot/putils.py

@@ -517,7 +517,7 @@ def ecdfplot(ax, df, label_stat=None, label_stat_format="4.2f", \
         Dictionnary containing the line object for each column in df.
     """
     lines = {}
-    for name, se in df.iteritems():
+    for name, se in df.items():
         values = se.sort_values().values
         values = values[~np.isnan(values)]