Custom View Filters

This module adds two new filters to views:

• Custom Az Filter: You can filter by the first letter of first/second word for a given text field you will have to define. You should provide a machine field name (special "title" field is also supported).
• Node granular date filter: You can filter by year or/and month given a date field. You should provide a machine field name (special "created" and "changed" properties are also supported).
• Date range picker filter: You can filter by a range of two dates. You should provide a machine field name (special "created" and "changed" properties are also supported).

It could also serve as a starting point for your custom views plugins.