diff --git a/CHANGELOG.md b/CHANGELOG.md
index bafbfbe..4ba6f5d 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -6,6 +6,15 @@ and this project adheres to [Semantic Versioning](http://semver.org/spec/v2.0.0.
 
 ## [Unreleased]
 
+## [v0.3.1] - 2019-12-06
+
+### Fixed
+- Item constructor now properly accepts passing in the collection
+- Item.substitute and item.get_filename now properly accept ${collection} as a template parameter
+
+### Deprecated
+- ItemCollection.load() is now ItemCollection.open() and behaves like Item.open() (able to read remote files)
+
 ## [v0.3.0] - 2019-09-19
 
 ### Fixed
@@ -56,7 +65,7 @@ and this project adheres to [Semantic Versioning](http://semver.org/spec/v2.0.0.
 Initial Release
 
 [Unreleased]: https://github.com/sat-utils/sat-stac/compare/master...develop
-[v0.2.1]: https://github.com/sat-utils/sat-stac/compare/0.2.0...v0.3.0
+[v0.3.0]: https://github.com/sat-utils/sat-stac/compare/0.2.0...v0.3.0
 [v0.2.0]: https://github.com/sat-utils/sat-stac/compare/0.1.3...v0.2.0
 [v0.1.3]: https://github.com/sat-utils/sat-stac/compare/0.1.2...v0.1.3
 [v0.1.2]: https://github.com/sat-utils/sat-stac/compare/0.1.1...v0.1.2
diff --git a/README.md b/README.md
index 3cb6e33..0ee64a9 100644
--- a/README.md
+++ b/README.md
@@ -40,13 +40,13 @@ The table below shows the corresponding versions between sat-stac and STAC:
 
 | sat-stac | STAC  |
 | -------- | ----  |
-| 0.1.x    | 0.6.x, 0.7.x |
-| 0.2.x    | 0.6.x, 0.7.x |
-| 0.3.x    | 0.8.x |
+| 0.1.x    | 0.6.x - 0.7.x |
+| 0.2.x    | 0.6.x - 0.7.x |
+| 0.3.x    | 0.6.x - 0.8.x |
 
 ## Tutorials
 
 There are two tutorials. [Tutorial-1](tutorial-1.ipynb) includes an overview of how to create and manipulate STAC static catalogs. [Tutorial-2](tutorial-2.ipynb) is on the Python classes that reflect STAC entities: Catalogs, Collections, and Items.
 
 ## About
-[sat-stac](https://github.com/sat-utils/sat-stac) was created by [Development Seed](<http://developmentseed.org>) and is part of a collection of tools called [sat-utils](https://github.com/sat-utils).
+[sat-stac](https://github.com/sat-utils/sat-stac) is part of a collection of tools called [sat-utils](https://github.com/sat-utils).
diff --git a/satstac/item.py b/satstac/item.py
index cbd7094..44ded20 100644
--- a/satstac/item.py
+++ b/satstac/item.py
@@ -114,7 +114,9 @@ def substitute(self, string):
         string = string.replace(':', '_colon_')
         subs = {}
         for key in [i[1] for i in Formatter().parse(string.rstrip('/')) if i[1] is not None]:
-            if key == 'id':
+            if key == 'collection':
+                subs[key] = self._data['collection']
+            elif key == 'id':
                 subs[key] = self.id
             elif key in ['date', 'year', 'month', 'day']:
                 vals = {'date': self.date, 'year': self.date.year, 'month': self.date.month, 'day': self.date.day}
diff --git a/satstac/itemcollection.py b/satstac/itemcollection.py
index 500f545..19e7573 100644
--- a/satstac/itemcollection.py
+++ b/satstac/itemcollection.py
@@ -1,8 +1,14 @@
 import json
+import os.path as op
+import requests
 
+from logging import getLogger
 from .collection import Collection
 from .item import Item
-from .utils import terminal_calendar
+from .thing import STACError
+from .utils import terminal_calendar, get_s3_signed_url
+
+logger = getLogger(__name__)
 
 
 class ItemCollection(object):
@@ -23,13 +29,42 @@ def __init__(self, items, collections=[], search={}):
                     i._collection = cols[col]
 
     @classmethod
-    def load(cls, filename):
+    def open_remote(self, url, headers={}):
+        """ Open remote file """
+        resp = requests.get(url, headers=headers)
+        if resp.status_code == 200:
+            dat = resp.text
+        else:
+            raise STACError('Unable to open %s' % url)
+        return json.loads(dat)
+
+    @classmethod
+    def open(cls, filename):
+        """ Load an Items class from a GeoJSON FeatureCollection """
+        """ Open an existing JSON data file """
+        logger.debug('Opening %s' % filename)
+        if filename[0:5] == 'https':
+            try:
+                data = cls.open_remote(filename)
+            except STACError as err:
+                # try signed URL
+                url, headers = get_s3_signed_url(filename)
+                data = cls.open_remote(url, headers)
+        else:
+            if op.exists(filename):
+                data = open(filename).read()
+                data = json.loads(data)
+            else:
+                raise STACError('%s does not exist locally' % filename)
+        collections = [Collection(col) for col in data['collections']]
+        items = [Item(feature) for feature in data['features']]
+        return cls(items, collections=collections, search=data.get('search'))
+
+    @classmethod
+    def load(cls, *args, **kwargs):
         """ Load an Items class from a GeoJSON FeatureCollection """
-        with open(filename) as f:
-            geoj = json.loads(f.read())
-        collections = [Collection(col) for col in geoj['collections']]
-        items = [Item(feature) for feature in geoj['features']]
-        return cls(items, collections=collections, search=geoj.get('search'))
+        logger.warning(f"ItemCollection.load() is deprecated, use ItemCollection.open()")
+        return cls.open(*args, **kwargs)
 
     def __len__(self):
         """ Number of scenes """
diff --git a/satstac/version.py b/satstac/version.py
index 0404d81..e1424ed 100644
--- a/satstac/version.py
+++ b/satstac/version.py
@@ -1 +1 @@
-__version__ = '0.3.0'
+__version__ = '0.3.1'