Meent

What's Changed
* bugfix: improve_dft condition by yonghakim in https://github.com/kc-ml2/meent/pull/26


**Full Changelog**: https://github.com/kc-ml2/meent/compare/v0.7.8...v0.7.9

bugfix: condition for `improve_dft`

What's Changed
* Dev by yonghakim in https://github.com/kc-ml2/meent/pull/25


**Full Changelog**: https://github.com/kc-ml2/meent/compare/v0.7.7...v0.7.8

bug fix: revert sign in Fourier series

What's Changed
* Dev by yonghakim in https://github.com/kc-ml2/meent/pull/24


**Full Changelog**: https://github.com/kc-ml2/meent/compare/v0.7.6...v0.7.7

adding improve_dft to improve resolution of Discrete Fourier series in to_conv_mat_discrete.

What's Changed
* Dev by yonghakim in https://github.com/kc-ml2/meent/pull/23


**Full Changelog**: https://github.com/kc-ml2/meent/compare/v0.7.5...v0.7.6

Important: Angle unit changed from degree to radian.

modified meent/rcwa.py not to import unneeded pakcages;
modified field_distribution.py to import matplotlib only in the function 'field_plot';

pmap` support on cpu with following code: `os.environ['XLA_FLAGS'] = '--xla_force_host_platform_device_count=24'`.
fix examples/ucell_optimize.py