Bump to version 5.7.0

Author: timothycrosley

CHANGELOG.md

@@ -4,7 +4,7 @@ Changelog
 NOTE: isort follows the [semver](https://semver.org/) versioning standard.
 Find out more about isort's release policy [here](https://pycqa.github.io/isort/docs/major_releases/release_policy/).
 
-### 5.7.0 December TBD
+### 5.7.0 December 30th 2020
   - Fixed #1612: In rare circumstances an extra comma is added after import and before comment.
   - Fixed #1593: isort encounters bug in Python 3.6.0.
   - Implemented #1596: Provide ways for extension formatting and file paths to be specified when using streaming input from CLI.

isort/_version.py

@@ -1 +1 @@
-__version__ = "5.6.4"
+__version__ = "5.7.0"

pyproject.toml

@@ -3,7 +3,7 @@ line-length = 100
 
 [tool.poetry]
 name = "isort"
-version = "5.6.4"
+version = "5.7.0"
 description = "A Python utility / library to sort Python imports."
 authors = ["Timothy Crosley <[email protected]>"]
 license = "MIT"