Allow for Partition columns to change data types

[DyfanJones]

The ability to do the following when uploading data to Athena

CREATE EXTERNAL TABLE sales_partitioned
(
  transaction_id INT,
  customer_id INT,
  product_id INT,
  quantity INT,
  price FLOAT,
  transaction_date date
)
PARTITIONED BY (year int, month int)
LOCATION 's3://your_partition_s3_path/'