fix tree merging for multiple params

MANIFEST.in

@@ -0,0 +1 @@
+include requirements.txt

polytope/datacube/index_tree.py

@@ -3,7 +3,7 @@
 
 from sortedcontainers import SortedList
 
-from .datacube_axis import IntDatacubeAxis
+from .datacube_axis import IntDatacubeAxis, UnsliceableDatacubeAxis
 
 
 class DatacubePath(OrderedDict):
@@ -85,7 +85,7 @@ def __eq__(self, other):
             if other.value == self.value:
                 return True
             else:
-                if isinstance(self.value, str):
+                if isinstance(self.axis, UnsliceableDatacubeAxis):
                     return False
                 else:
                     if other.value - 2 * other.axis.tol <= self.value <= other.value + 2 * other.axis.tol:
@@ -94,7 +94,6 @@ def __eq__(self, other):
                         return True
                     else:
                         return False
-        # return (self.axis.name, self.value) == (other.axis.name, other.value)
 
     def __lt__(self, other):
         return (self.axis.name, self.value) < (other.axis.name, other.value)

setup.py

@@ -8,7 +8,7 @@
     io.open("polytope/version.py", encoding="utf_8_sig").read(),
 ).group(1)
 
-with open('requirements.txt') as f:
+with open("requirements.txt") as f:
     requirements = f.read().splitlines()
 
 setup(
@@ -25,5 +25,5 @@
     packages=find_packages(),
     zip_safe=False,
     include_package_data=True,
-    install_requires=requirements
+    install_requires=requirements,
 )