Faunadb

- Added `documents`, `now`
- Added `any` , `all`
- Added `count`, `sum`, `mean`
- Added `time_add`, `time_subtract`, `time_diff`
- Added `starts_with`, `ends_with`, `contains_str`, `contains_str_regex`, `regex_escape`
- Updated references to documentation

- Added `merge`, `format`, `reduce`
- Send X-Fauna-Driver with HTTP requests
- Added `move_database`, `range`

- Support new schema names: Class -> Collection; Instance -> Document
Deprecated `create_class`, `class_expr`, `class_`, `classes`
Added `create_collection`, `collection`, `collections`
- Added `to_seconds`, `to_millis`, `to_micros`, `day_of_week`, `day_of_month`, `day_of_year`, `month`, `hour`, `minute`, `second`.
- Added `create_role`, `role`, `roles`
- Added `find_str`, `find_str_regex`, `replace_str`, `replace_str_regex`, `length`, `lowercase`, `uppercase`, `titlecase`, `ltrim`, `rtrim`, `space`, `substring`, `repeat`

- Expose last seen txn via `get_last_txn_time`
- Update documentation links

- Added `ngram` function
- Added `is_empty` and `is_nonempty` functions
- Added `to_string`, `to_number`, `to_time`, and `to_date` functions

- Added support for recursive references
- Added `abort` function
- Added `normalizer` argument to `casefold` function
- Added `new_id` function
- Deprecated `next_id` function in favor of `new_id`
- Added `identity` and `has_identity` functions
- Added `singleton` and `events` functions
- Added `select_all` function