Added missing Dict functions to the SDK

Full Changelog: v0.8.2...v0.8.3

New Map Functions

Build Functions

• singleton - Create a dictionary with one key-value pair.

• update - Update the value of a dictionary for a specific key with a given function.

• remove - Remove a key-value pair from a dictionary. If the key is not found, no changes are made.

Query Functions

• keys - Get all of the keys in a dictionary into a list

• values - Get all of the values in a dictionary into a list

Transform Functions

• map - Apply a function to all values in a dictionary.

• foldl - Fold over the key-value pairs in a dictionary from lowest key to highest key.

• foldr - Fold over the key-value pairs in a dictionary from highest key to lowest key.

• filter - Keep only the key-value pairs that pass the given test.

• partition - Partition a dictionary according to some test. The first dictionary contains all key-value pairs which passed the test, and the second contains the pairs that did not.

Combine Functions

• union - Combine two dictionaries. If there is a collision, preference is given to the first dictionary.

• intersect - Keep a key-value pair when its key appears in the second dictionary. Preference is given to values in the first dictionary.

• diff - Keep a key-value pair when its key does not appear in the second dictionary.