Release v0.7.9

• small bugfix in processor notebook
• fix nanoevents notebook
• Merge pull request #613 from CoffeaTeam/agc_notebooks
• Merge pull request #612 from yimuchen/fix_runner_reuse
• Merge pull request #608 from CoffeaTeam/reduce-ci
• Merge pull request #609 from nikoladze/remove-awkward-form-workaround-physlite