Clippy Tracking Issue: clippy::too_many_lines (pedantic)

Documentation: [clippy::too_many_lines](https://rust-lang.github.io/rust-clippy/master/?search=too_many_lines#too_many_lines)

Current Status: Temporarily allowed until all cases are updated (each fix needs a lot of attention) since large functions (> 100 lines) may need additional refactoring in surrounding cod