[ismfeed] small bugs

ismfeed/__init__.py

@@ -0,0 +1,5 @@
+from .ismfeed import (
+    get_sinks,
+    compute_sfr,
+    plot_mass_sfr,
+)

ismfeed/ismfeed.py

@@ -9,7 +9,7 @@ import matplotlib as mpl
 
 import matplotlib.ticker as tick
 import matplotlib.pyplot as plt
-from matplotlib import FuncFormatter
+from matplotlib.ticker import FuncFormatter
 
 from utils.units import convert_exp