Convert IP field from text to inet type

sql/schema_version_18.sql

@@ -0,0 +1 @@
+alter table user_sessions alter column ip set data type inet using ip::inet;

sql/sql.go

@@ -1,5 +1,5 @@
 // Code generated by go generate; DO NOT EDIT.
-// 2018-05-20 15:22:33.771570698 -0700 PDT m=+0.003041211
+// 2018-05-21 12:33:12.475674107 -0700 PDT m=+0.003076147
 
 package sql
 
@@ -135,6 +135,7 @@ alter table integrations add column nunux_keeper_api_key text default '';`,
 alter table integrations add column pocket_access_token text default '';
 alter table integrations add column pocket_consumer_key text default '';
 `,
+	"schema_version_18": `alter table user_sessions alter column ip set data type inet using ip::inet;`,
 	"schema_version_2": `create extension if not exists hstore;
 alter table users add column extra hstore;
 create index users_extra_idx on users using gin(extra);
@@ -183,6 +184,7 @@ var SqlMapChecksums = map[string]string{
 	"schema_version_15": "13ff91462bdf4cda5a94a4c7a09f757761b0f2c32b4be713ba4786a4837750e4",
 	"schema_version_16": "9d006faca62fd7ab787f64aef0e0a5933d142466ec4cab0e096bb920d2797e34",
 	"schema_version_17": "b9f15d6217275fedcf6d948dd85ebe978b869bf37f42a86fd5b50a51919fa0e1",
+	"schema_version_18": "c0ec24847612c7f2dc326cf735baffba79391a56aedd73292371a39f38724a71",
 	"schema_version_2":  "e8e9ff32478df04fcddad10a34cba2e8bb1e67e7977b5bd6cdc4c31ec94282b4",
 	"schema_version_3":  "a54745dbc1c51c000f74d4e5068f1e2f43e83309f023415b1749a47d5c1e0f12",
 	"schema_version_4":  "216ea3a7d3e1704e40c797b5dc47456517c27dbb6ca98bf88812f4f63d74b5d9",

storage/migration.go

@@ -12,7 +12,7 @@ import (
 	"github.com/miniflux/miniflux/sql"
 )
 
-const schemaVersion = 17
+const schemaVersion = 18
 
 // Migrate run database migrations.
 func (s *Storage) Migrate() {