update CHANGELOG and bump version to 5.5.0

Author: beniwohli

CHANGELOG.asciidoc

@@ -18,21 +18,26 @@ endif::[]
 ===== Bug fixes
 ////
 
-=== Unreleased
+//=== 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-5.5.0]]
+==== v5.5.0
+
 [float]
 ===== Features
 * Added destination information to database/HTTP spans, used for service maps {pull}618[#618]
 
 [float]
 ===== Deprecations
 
- * Python 3.4 is no longer supported.
+ * *Python 3.4 is no longer supported.*
 
-[[release-notes-5.x]]
-=== Python Agent version 5.x
 
 [[release-notes-5.4.3]]
 ==== v5.4.3

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, 4, 3)
+__version__ = (5, 5, 0)
 VERSION = ".".join(map(str, __version__))