add df.load function and split up line_diff #179

Job	Run time
Build on Ubuntu 20.04 with Python 3.8	25m 41s
Build on Ubuntu Latest with Python 3.8	24m 44s
Build on macOS arm64 with Python 3.8	6h 0m 3s
Build on macOS x64 with Python 3.8	25m 28s
Build on Windows x64 with Python 3.8	33m 54s
Build on Ubuntu 20.04 with Python 3.9	25m 19s
Build on Ubuntu Latest with Python 3.9	24m 7s
Build on macOS arm64 with Python 3.9	26m 28s
Build on macOS x64 with Python 3.9	25m 38s
Build on Windows x64 with Python 3.9	35m 10s
Build on Ubuntu 20.04 with Python 3.10	25m 27s
Build on Ubuntu Latest with Python 3.10	23m 47s
Build on macOS arm64 with Python 3.10	32m 10s
Build on macOS x64 with Python 3.10	25m 43s
Build on Windows x64 with Python 3.10	34m 25s
Build on Ubuntu 20.04 with Python 3.11	25m 6s
Build on Ubuntu Latest with Python 3.11	24m 0s
Build on macOS arm64 with Python 3.11	24m 37s
Build on macOS x64 with Python 3.11	25m 7s
Build on Windows x64 with Python 3.11	34m 36s
Release	0s
	14h 41m 30s

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