sync with Kovid's branch
icon for histmag
add optyczne_pl
add gofin_pl
More helpful error message when passing an invalid column label to calibredb remove_custom_column
New Polish news sources
Fix RTE news
Always load is_multiple fields in db order. Fix various tests to work on windows. Fix author_sort tests to not care about tweaks. Implement changing path of books when metadata changes. Add a test loader to load all tests
Nicer test invocation