future warning from pandas

[jennwuu]

not sure what it means, but i get this warning when i try to use swmmio

Warning (from warnings module):
File "C:\Python37\lib\site-packages\swmmio\swmmio.py", line 289
all_nodes = pd.concat([juncs_df, outfalls_df, storage_df])
FutureWarning: Sorting because non-concatenation axis is not aligned. A future version
of pandas will change to not sort by default.

To accept the future behavior, pass 'sort=False'.

To retain the current behavior and silence the warning, pass 'sort=True'.