adds history table

lootalot_db/migrations/2019-10-27-135235_history/down.sql

@@ -0,0 +1 @@
+DROP TABLE history;

lootalot_db/migrations/2019-10-27-135235_history/up.sql

@@ -0,0 +1,8 @@
+CREATE TABLE history (
+       id INTEGER PRIMARY KEY NOT NULL,
+       player_id INTEGER NOT NULL,
+       event_date TIMESTAMP DEFAULT CURRENT_TIMESTAMP NOT NULL,
+       text VARCHAR NOT NULL,
+       updates VARCHAR,
+       FOREIGN KEY (player_id) REFERENCES players(id)
+);