adding osm2sqlite to the toolkit

create_database.sql

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+-- Borrowed from osmium project --
+
+create table nodes (
+    id INTEGER PRIMARY KEY,
+    timestamp TEXT,
+    user TEXT,
+    lat REAL CHECK ( lat <= 90 AND lat >= -90 ),
+    lon REAL CHECK ( lon <= 180 AND lon >= -180 )
+);
+
+create index nodes_lat ON nodes ( lat );
+create index nodes_lon ON nodes ( lon );
+
+create table node_tags (
+    node_id INTEGER REFERENCES nodes ( id ),
+    key TEXT,
+    value TEXT,
+    UNIQUE ( node_id, key, value )
+);
+
+-- TODO there should be some sort of 'ON DELETE CASCADE' here
+
+create index node_tags_node_id ON node_tags ( node_id );
+create index node_tags_key ON node_tags ( key );
+
+create table ways (
+    id INTEGER PRIMARY KEY,
+    timestamp TEXT,
+    user TEXT
+);
+
+create table way_tags (
+    way_id INTEGER REFERENCES ways ( id ),
+    key TEXT,
+    value TEXT,
+    UNIQUE ( way_id, key, value )
+);
+
+-- TODO there should be some sort of 'ON DELETE CASCADE' here
+
+create index way_tags_way_id ON way_tags ( way_id );
+create index way_tags_key ON way_tags ( key );
+
+create table way_nodes (
+    way_id INTEGER REFERENCES ways ( id ),
+    local_order INTEGER,
+    node_id INTEGER REFERENCES nodes ( id ),
+    UNIQUE ( way_id, local_order, node_id )
+);
+
+-- TODO there should be some sort of 'ON DELETE CASCADE' here
+
+create index way_nodes_way_id ON way_nodes ( way_id );
+create index way_nodes_node_id ON way_nodes ( node_id );
+
+create table relations (
+    id INTEGER PRIMARY KEY,
+    timestamp TEXT,
+    user TEXT
+);
+
+create table relation_tags (
+    relation_id INTEGER REFERENCES relations ( id ),
+    key TEXT,
+    value TEXT,
+    UNIQUE ( relation_id, key, value )
+);
+
+-- TODO there should be some sort of 'ON DELETE CASCADE' here
+
+create index relation_tags_relation_id ON relation_tags ( relation_id );
+create index relation_tags_key ON relation_tags ( key );
+
+create table relation_members (
+    relation_id INTEGER REFERENCES relations ( id ),
+    type TEXT CHECK ( type IN ("node", "way", "relation")),
+    ref INTEGER,
+    role TEXT,
+    local_order INTEGER
+);
+
+create index relation_members_relation_id ON relation_members ( relation_id );
+create index relation_members_type ON relation_members ( type, ref );
+
+