Update database schema

Also bump major version to match schema version

src/database/migrations/mod.rs

@@ -0,0 +1,36 @@
+pub mod v1_to_v2;
+
+use crate::database::unversioned::global::schema_version;
+use duplicate::duplicate;
+use sled::Db;
+
+pub fn migrate(db: &mut Db, from: schema_version::V, to: schema_version::V) -> Result<(), MigrationError> {
+    for current in from..to {
+        let next = current + 1;
+
+        println!("Will migrate from {} to {}", current, next);
+        match (current, next) {
+            (1, 2) => v1_to_v2::migrate(db)?,
+            _ => panic!("No valid migration from version {} to version {}", current, next),
+        }
+    }
+
+    Ok(())
+}
+
+#[derive(Debug)]
+pub enum MigrationError {
+    Serde(bincode::Error),
+    Sled(sled::Error),
+}
+
+#[duplicate(
+  Variant                       Error;
+  [ Sled ]      [ sled::Error ];
+  [ Serde ]     [ bincode::Error ];
+)]
+impl From<Error> for MigrationError {
+    fn from(e: Error) -> MigrationError {
+        MigrationError::Variant(e)
+    }
+}