Not failing silently when creating tables on attached SQLite databases
Never mind. It works after updating from 2.8.5 to 3.0.18.
Here's minimal example reproducing the issue:

```python
from playhouse.apsw_ext import *

db = APSWDatabase('main.db')
db.execute_sql('attach database "other.db" as other')

class MainTable(Model):
    field1 = IntegerField()
    
    class Meta:
        database = db
    
class AttachedTable(Model):
    field1 = IntegerField()
    
    class Meta:
        database = db
        schema = 'other'

MainTable.create_table(fail_silently=True)
AttachedTable.create_table(fail_silently=True)
```

```python
File "<ipython-input-5-002497356290>", line 22, in <module>
    AttachedTable.create_table(fail_silently=True)

File "python3.5/site-packages/peewee.py", line 4857, in create_table
    db.create_table(cls)

File "python3.5/site-packages/playhouse/sqlite_ext.py", line 948, in create_table
    return self.execute_sql(sql, params)

File "python3.5/site-packages/playhouse/apsw_ext.py", line 116, in execute_sql
    self._execute_sql(cursor, sql, params)

File "python3.5/site-packages/playhouse/apsw_ext.py", line 109, in _execute_sql
    cursor.execute(sql, params or ())

File "src/cursor.c", line 1019, in APSWCursor_execute.sqlite3_prepare

File "src/statementcache.c", line 386, in sqlite3_prepare

SQLError: SQLError: table "attachedtable" already exists
```