v1.3.0: paywall-filter (Telegraaf/NHD premium) + staking-fix

- exclude_paywalled config (default true): verwijdert feedparser-entries met
  <premium>true</premium> vóór opslag (Telegraaf en NHD markeren dit; AD/
  Parool/Trouw/VK/NRC niet)
- v8-migratie: entry.paywalled BOOLEAN
- staking-fix (v1.2.3): losse 'staking/stakingen' uit filter; alleen ov-
  specifiek: ov-staking, bus/tram/metro/spoor/conducteurs-staking,
  'openbaar vervoer'
- config-proof: match_filter altijd enkelregelig YAML

buzzrss/db.py

@@ -91,6 +91,7 @@ class Entry:
     title: str
     summary: str
     link: str
+    paywalled: bool = False
 
     def __attrs_post_init__(self):
         if self.date.tzinfo is None:
@@ -161,14 +162,14 @@ class DBManager:
             for entry in entries:
                 entry.feed_id = override_feed_id
         records = [attr.astuple(entry) for entry in entries]
-        columns = ("feed_id", "id", "date", "title", "summary", "link")
+        columns = ("feed_id", "id", "date", "title", "summary", "link", "paywalled")
         async with self.db.acquire() as conn:
             if self.db.scheme == Scheme.POSTGRES:
                 await conn.copy_records_to_table("entry", records=records, columns=columns)
             else:
                 q = (
-                    "INSERT INTO entry (feed_id, id, date, title, summary, link) "
-                    "VALUES ($1, $2, $3, $4, $5, $6)"
+                    "INSERT INTO entry (feed_id, id, date, title, summary, link, paywalled) "
+                    "VALUES ($1, $2, $3, $4, $5, $6, $7)"
                 )
                 await conn.executemany(q, records)