Updated to v1.2.0, added support for hierarchical, order_by, order_dir, hide_empty, search_placeholder

- Renamed the `taxonomies` argument to `fields` - `taxonomies` is now no
longer appropriate as this list contains field types other than
taxonomies - this list now contains taxonomies, `post_type`, `post_date`
and `search` - `taxonomies` as an argument is still supported however
will be deprecated
 - Search box can now be positioned anywhere, simply
include `search` in the fields list in the position desired.  Upgrading
from previous versions will cause you to lose your search box, simply
include `search` in the fields list to show it again
 - Drop support for
`search` argument as no longer relevant - control display of search
input by adding it to the `fields` list
 - Labels have been completely
rewritten - `label` has been renamed to `headings` to avoid confusion
with internal taxonomy labels - the `headings` argument now allows for
any text to be added and displayed as a heading for each field - this
allows for much more flexibility and no longer uses internal taxonomy
labels - to hide a label simply leave blank
 - Added support for
hierarchical taxonomies for all input types - checkbox, radio & select

- Added support for ordering of taxonomies - use `order_by` argument -
allowed values are `id`, `name`, `slug`, `count`, `term_group`
 - Added
support for ordering direction of taxonomies - use `order_dir` argument
- allowed values are 'asc' or 'desc'
 - Added support to show or hide
empty taxonomies - use `hide_empty` argument
 - Added support for
`search_placeholder`
 - Updated `post_date` functionality to work with
older versions of WP - can be displayed either as `date` or `daterange`
- the `post_date` field uses the HTML 5 input type of `date` - browsers
that do not support it will simply show a text box - a tutorial of
integrating jquery for graceful degredation is in the works
 - Renamed
`submitlabel` to `submit_label` - `submitlabel` still works for now.
 -
Renamed `type` to `types` - `type` still works for now.
 - Updated
display of checkboxes and radio buttons, inputs are now wrapped in an
unordered list which may affect your styling
 - Various bug fixes
 -
Thanks to `bradaric` for help with hierarchical dropdown lists and date
input types - https://github.com/bradaric