Rewrite issue listing script

Rewrote the script in python and leveraged the dictionary CSV processor to
prevent field number mismatches. Combined the two scripts into one so that
all user-facing issues that are fixed can be easily shown in the release
notes.

Documentation/process.py

@@ -0,0 +1,30 @@
+#!/usr/bin/env python3
+
+import sys
+import csv
+
+bugs = []
+new_features = []
+
+for row in csv.DictReader(sys.stdin):
+    if row['Issue Type'] == 'Bug':
+        bugs.append(row)
+    elif row['Issue Type'] == 'New Feature':
+        new_features.append(row)
+
+if len(new_features) > 0:
+    print("## New Features")
+    print()
+
+    for f in new_features:
+        print("* [" + f['Issue key'] + "](https://jira.mariadb.org/browse/" + f['Issue key'] + ") " + f['Summary'])
+    print()
+
+
+print("## Bug fixes")
+print()
+
+for b in bugs:
+    print("* [" + b['Issue key'] + "](https://jira.mariadb.org/browse/" + b['Issue key'] + ") " + b['Summary'])
+
+print()