increased allclose atol when checking for cosine-spaced points

v0.7.4

Merge branch 'main' of github.com:pavelkomarov/spectral-derivatives

nu -> order

warning for >4th order derivative now links to the notebook that solves #1

antiderivative support for Fourier

v0.7.2

bumped version number

Filtering support

Bug fix so filtering works in higher dimension

filtering support

v0.7

changed wording

arbitrary domains support

Technically you don't need to take t_n as input to the functions, but giving it and treating a shift/scale of domain helps make the code a lot more user-friendly. Also added numerous error messages to steer users in the right direction vis-a-vis sampling, since it's easy to goof up.

minor improvements

v0.5

fixed package discovery issue

Initial release

still no pytests or coverage, but I want to get it out