[release] Update changelog for 0.2.67. (#10458)

hail/Makefile

@@ -14,7 +14,7 @@ BRANCH := $(shell git rev-parse --abbrev-ref HEAD)
 SCALA_VERSION ?= 2.12.13
 SPARK_VERSION ?= 3.1.1
 HAIL_MAJOR_MINOR_VERSION := 0.2
-HAIL_PATCH_VERSION := 66
+HAIL_PATCH_VERSION := 67
 HAIL_PIP_VERSION := $(HAIL_MAJOR_MINOR_VERSION).$(HAIL_PATCH_VERSION)
 HAIL_VERSION := $(HAIL_PIP_VERSION)-$(SHORT_REVISION)
 ELASTIC_MAJOR_VERSION ?= 7

hail/python/hail/docs/change_log.md

@@ -22,8 +22,22 @@ Please note that **forward compatibility should not be expected, especially
 relating to file formats**: this means that it may not be possible to use
 an earlier version of Hail to read files written in a later version.
 
+---
+
+## Version 0.2.67
+
+### Critical performance fix
+
+Released 2021-05-06
+
+- (hail#10451) Fixed a memory leak / performance bug triggered by `hl.literal(...).contains(...)
+
+---
+
 ## Version 0.2.66
 
+Released 2021-05-03
+
 ### New features
 
 - (hail#10398) Added new method `BlockMatrix.to_ndarray`.