change now to current_date
add books app
add admin.py to app
remove not null restriction
add AuthorAdmin and list_display option
add verbose_name
add search_fields
add date as filter
add ordering
add fields option
add filter_horizontal
try filter_vertically
add views for search book
add search results html file
handle empty search string
use one view to handle search
add validation for length of search query
handle different error message
add contact forms
add ContactForm