1.5.6

Various fixes & improvements

• Create feature.yml (#1350) by @vladanpaunovic
• Update contribution guide (#1346) by @antonpirker
• chore: add bug issue template (#1345) by @vladanpaunovic
• Added default value for auto_session_tracking (#1337) by @antonpirker
• docs(readme): reordered content (#1343) by @antonpirker
• fix(tests): Removed unsupported Django 1.6 from tests to avoid confusion (#1338) by @antonpirker
• Group captured warnings under separate issues (#1324) by @mnito
• build(changelogs): Use automated changelogs from Craft (#1340) by @BYK
• fix(aiohttp): AioHttpIntegration sentry_app_handle() now ignores ConnectionResetError (#1331) by @cmalek
• meta: Remove black GH action (#1339) by @sl0thentr0py
• feat(flask): Add sentry_trace() template helper (#1336) by @BYK