release v1.0.3

- fix toastify css and js file missing

release v1.0.2

 - fix package `demos` were accidentally added during installation
 - reduce sdist tarball file size by removing unnecessary files
 - upgrade npm deps
 - fix demo links in `demos/__main__.py`

fix: UnicodeDecodeError when install on windows

V1.0

Merge pull request pywebio#6 from wang0618/dev

Release version 0.3.0

Merge pull request pywebio#5 from wang0618/dev

Release version 0.2.0