added more test cases for old_scans

fixed max diffs

thru 48

thru 44

thru 36

Clean thru 31

Multi column tests cleaned thru page 21

Multi col test fixups

Removing some invalid math tests on manual inspection

added url's to old_scans data

added old_scans data

Remvoing a table that was not great

cleaned multi_column data

Some test cleanup

Cleanup and adding URLs for multi column

added multi_column data

Fewer tests but better

Cleaning header footer tests more

Removing rejected tests

Cleanng table testdata

added tables_data_part2

Cleanup some tests

Cleaning up header footer tests and adding URLs

added headers_footers data part2

added headers_footers files

500 table tests achieved!

Adding URLs

More table tests

More table tests

Test corrections

Some test fixes

Test fix

Test fix

More table tests

Writing external urls for table tests

Uneeded files

Test cleanup

Adding urls

Unicode fun

Adding table tests

Add arxiv math JSONL data file

Add arxiv math PDFs with Git LFS