* Slice is now correctly applied to lists after sort/order but before filtering.
* List_count() now supports the same filtering parameters as get_list.
* When using the `prefix="x"` parameter with get_list, only prefixed varaibles will now be parsed by default, unless `require_prefix="n"`
* Removed dependency on iconv for transliteration of embed file names to ascii, because it is unreliable across environments; now filenames must be alphanumeric, - or _
* {stash:nocache} now works *inside* snippets that are inside stash embeds, and this behaviour is recursive.
* Fixed #80