update CHANGELOG and bump version to 5.4.0

Author: beniwohli

CHANGELOG.asciidoc

@@ -18,13 +18,19 @@ endif::[]
 ===== Bug fixes
 ////
 
-=== Unreleased
-
-https://github.com/elastic/apm-agent-python/compare/v5.3.1\...master[Check the diff]
+//=== Unreleased
 
 // Unreleased changes go here
 // When the next release happens, nest these changes under the "Python Agent version 5.x" heading
 
+[[release-notes-5.x]]
+=== Python Agent version 5.x
+
+[[release-notes-5.4.0]]
+==== v5.4.0
+
+https://github.com/elastic/apm-agent-python/compare/v5.3.3\...v5.4.0[Check the diff]
+
 [float]
 ===== Deprecations
 
@@ -34,11 +40,11 @@ This will be the last minor release to support the following versions:
  * Django 1.8, 1.9 and 1.10
  * Flask < 1.0
 
- In addition, as of this release we only supported capturing extended
- information on elasticsearch queries when using keyword arguments with the
- elasticsearch-py API. This is in keeping with the
- https://elasticsearch-py.readthedocs.io/en/master/api.html#api-documentation[upstream policy]
- of positional arguments being unsupported. {pull}697[#697]
+In addition, as of this release we only supported capturing extended
+information on Elasticsearch queries when using keyword arguments with the
+elasticsearch-py API. This is in keeping with the
+https://elasticsearch-py.readthedocs.io/en/master/api.html#api-documentation[upstream policy]
+of positional arguments being unsupported. {pull}697[#697]
 
 [float]
 ===== New Features
@@ -59,9 +65,6 @@ This will be the last minor release to support the following versions:
  * introduced workaround to avoid instrumenting twice in rare cases (#708)
 
 
-[[release-notes-5.x]]
-=== Python Agent version 5.x
-
 [[release-notes-5.3.3]]
 ==== v5.3.3
 

elasticapm/version.py

@@ -28,5 +28,5 @@
 #  OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
 #  OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
 
-__version__ = (5, 3, 3)
+__version__ = (5, 4, 0)
 VERSION = ".".join(map(str, __version__))