Pipen-filters

- ⬆️ Bump pipen to 0.11

**Full Changelog**: https://github.com/pwwang/pipen-filters/compare/0.8.0...0.9.0

- ⬆️ Bump pipen to 0.10.0

**Full Changelog**: https://github.com/pwwang/pipen-filters/compare/0.7.0...0.8.0

- 🔖 Bump pipen to 0.9
- ⬆️ Drop python3.7
- ⬆️ Add slugify for slutify filter
- ✨ Add logging filter to shorten template_opts in log

**Full Changelog**: https://github.com/pwwang/pipen-filters/compare/0.6.0...0.7.0

- ⬆️ Upgrade pipen to 0.7

**Full Changelog**: https://github.com/pwwang/pipen-filters/compare/0.5.0...0.6.0

- ⬆️ Bump pipen to 0.6

**Full Changelog**: https://github.com/pwwang/pipen-filters/compare/0.4.0...0.5.0

- ⬆️ Bump pipen to 0.5

**Full Changelog**: https://github.com/pwwang/pipen-filters/compare/0.3.0...0.4.0