Update CHANGELOG.md

Author: ericmjl

CHANGELOG.md

@@ -1,23 +1,20 @@
 # Changelog
 
 ## [Unreleased]
--   [INF] Simplify a bit linting, use pre-commit as the CI linting checker. @Zeroto521
 -   [ENH] Deprecate `aggfunc` from `pivot_wider`; aggregation can be chained with pandas' `groupby`.
 -   [BUG] Fix conditional join issue for multiple conditions, where pd.eval fails to evaluate if numexpr is installed. #898 @samukweku
 -   [ENH] Added `case_when` to handle multiple conditionals and replacement values. Issue #736. @robertmitchellv
 -   [ENH] Deprecate `new_column_names` and `merge_frame` from `process_text`. Only existing columns are supported. @samukweku
 -   [ENH] `complete` uses `pd.merge` internally, providing a simpler logic, with some speed improvements in certain cases over `pd.reindex`. @samukweku
 -   [ENH] `expand_grid` returns a MultiIndex DataFrame, allowing the user to decide how to manipulate the columns. @samukweku
-
+-   [INF] Simplify a bit linting, use pre-commit as the CI linting checker. @Zeroto521
+-   [ENH] Fix bug in `pivot_longer` for wrong output when `names_pattern` is a sequence with a single value. Issue #885 @samukweku
+-   [ENH] Deprecate `aggfunc` from `pivot_wider`; aggregation can be chained with pandas' `groupby`.
 
 ## [v0.21.2] - 2021-09-01
 
 -   [ENH] Fix warning message in `coalesce`, from bfill/fill;`coalesce` now uses variable arguments. Issue #882 @samukweku
 -   [INF] Add SciPy as explicit dependency in `base.in`. Issue #895 @ericmjl
--   [ENH] Fix bug in `pivot_longer` for wrong output when `names_pattern` is a sequence with a single value. Issue #885 @samukweku
--   [ENH] Deprecate `aggfunc` from `pivot_wider`; aggregation can be chained with pandas' `groupby`.
--   [BUG] Fix conditional join issue for multiple conditions, where pd.eval fails to evaluate if numexpr is installed. #898 @samukweku
--   [INF] Simplify a bit linting, use pre-commit as the CI linting checker. @Zeroto521
 
 
 ## [v0.21.1] - 2021-08-29