Added all the main files of the library

utils.py

@@ -0,0 +1,24 @@
+def sorted_params_string(filters_dict):
+    """
+    This function takes a dict and returns it in a sorted form for the url filter, it's primarily used for cache purposes.
+    """
+    filters_string = ''
+    for key in sorted(filters_dict.keys()):
+        if filters_string == '':
+            filters_string = f"{key}={','.join(str(val) for val in sorted(filters_dict[key]))}"
+        else:
+            filters_string = f"{filters_string}&{key}={','.join(str(val) for val in sorted(filters_dict[key]))}"
+        filters_string = filters_string.strip()
+    return filters_string
+
+
+def parse_tags_to_dict(tags):
+    tagdict = {}
+    if ':' not in tags:
+        tagdict = {}
+    else:   
+        for subtag in tags.split('&'):
+            tagkey, taglist = subtag.split(':')
+            taglist = taglist.split(',')
+            tagdict[tagkey] = set(taglist)
+    return tagdict