Update HISTORY.md for release

Author: jayqi

HISTORY.md

@@ -1,6 +1,6 @@
 # History
 
-## 0.4.0 (unreleased)
+## 0.4.0 (2021-10-29)
 
 - Logging improvements. ([Issue #74](https://github.com/drivendataorg/nbautoexport/issues/74), [PR #80](https://github.com/drivendataorg/nbautoexport/pull/80))
   - Adds additional log statements during post-save hook initialization and execution to facilitate debugging.
@@ -10,24 +10,24 @@
 
 ## 0.3.1 (2021-03-10)
 
-- Remove extraneous dependency on `jupyter_contrib_nbextensions`. Add `traitlets`, `notebook`, `jupyter_core`, and `nbformat` as explicit dependencies; previously they were treated as transitive dependencies even though they are actually direct dependencies. [#68](https://github.com/drivendataorg/nbautoexport/issues/68)
+- Remove extraneous dependency on `jupyter_contrib_nbextensions`. Add `traitlets`, `notebook`, `jupyter_core`, and `nbformat` as explicit dependencies; previously they were treated as transitive dependencies even though they are actually direct dependencies. ([Issue #68](https://github.com/drivendataorg/nbautoexport/issues/68))
 
 ## 0.3.0 (2021-02-18)
 
 - Explicitly set all input and output file encodings to UTF-8, which fixes a bug with HTML exports on Windows with `nbconvert` v6.0. This version removes the version ceiling on <6.
-  - This is not expected to cause any backwards compatibility issues. However, in the _very_ unlikely instance that your `jupyter_notebook_config.py` file or your `nbautoexport.json` config file is Windows-1252-encoded _and_ contains non-ASCII characters, you will need to convert them to UTF-8. ([#57](https://github.com/drivendataorg/nbautoexport/issues/57), [#61](https://github.com/drivendataorg/nbautoexport/pull/61))
+  - This is not expected to cause any backwards compatibility issues. However, in the _very_ unlikely instance that your `jupyter_notebook_config.py` file or your `nbautoexport.json` config file is Windows-1252-encoded _and_ contains non-ASCII characters, you will need to convert them to UTF-8. ([Issue #57](https://github.com/drivendataorg/nbautoexport/issues/57), [PR #61](https://github.com/drivendataorg/nbautoexport/pull/61))
 
 ## 0.2.1 (2020-09-18)
 
-- `nbconvert` released version 6, which may break HTML exports on Windows. Pinning to `nbconvert<6` until we can address [#57](https://github.com/drivendataorg/nbautoexport/issues/57).
+- `nbconvert` released version 6, which may break HTML exports on Windows. Pinning to `nbconvert<6` until we can address [Issue #57](https://github.com/drivendataorg/nbautoexport/issues/57).
 
 ## 0.2.0 (2020-09-04)
 
-- Add option to specify glob-style patterns to exclude files from deletion when using `clean`. See [documentation](https://nbautoexport.drivendata.org/stable/cleaning/#excluding-files) for more details. ([#46](https://github.com/drivendataorg/nbautoexport/issues/46), [#54](https://github.com/drivendataorg/nbautoexport/pull/54))
+- Add option to specify glob-style patterns to exclude files from deletion when using `clean`. See [documentation](https://nbautoexport.drivendata.org/stable/cleaning/#excluding-files) for more details. ([Issue #46](https://github.com/drivendataorg/nbautoexport/issues/46), [PR #54](https://github.com/drivendataorg/nbautoexport/pull/54))
 
 ## 0.1.1 (2020-08-06)
 
-- Fixes missing `requirements.txt` bug when installing from source distribution. ([#50](https://github.com/drivendataorg/nbautoexport/issues/50), [#52](https://github.com/drivendataorg/nbautoexport/pull/52))
+- Fixes missing `requirements.txt` bug when installing from source distribution. ([Issue #50](https://github.com/drivendataorg/nbautoexport/issues/50), [PR #52](https://github.com/drivendataorg/nbautoexport/pull/52))
 
 ## 0.1.0 (2020-08-05)