Implement drone mutation support with some exceptions

eos/db/migrations/upgrade45.py

@@ -0,0 +1,18 @@
+"""
+Migration 45
+
+- Drone mutaplasmid support
+"""
+
+import sqlalchemy
+
+
+def upgrade(saveddata_engine):
+    try:
+        saveddata_engine.execute("SELECT baseItemID FROM drones LIMIT 1")
+    except sqlalchemy.exc.DatabaseError:
+        saveddata_engine.execute("ALTER TABLE drones ADD COLUMN baseItemID INTEGER;")
+    try:
+        saveddata_engine.execute("SELECT mutaplasmidID FROM drones LIMIT 1")
+    except sqlalchemy.exc.DatabaseError:
+        saveddata_engine.execute("ALTER TABLE drones ADD COLUMN mutaplasmidID INTEGER;")