Add spanish word list - Githubissues

Add a 8192 words-long Spanish wordlist. The wordlist was generated from two different sources of words:

The file /usr/share/dict/spanish from Debian's wspanish package.
A list of the most used Spanish words from Corpus de Referencia del Español Actual (CREA).

The final Spanish wordlist has been generated as follows:

* Start from /usr/share/dict/spanish and filter out:
    - words not matching /^[a-z]+$/
    - words shorter than 4 characters
    - words longer than 8 characters
* Do the same with the CREA word list.
* Compare both lists and extract the words that appear in both lists.
* Remove all words that are a suffix of any other word in the list.
* Remove some offending and non-Spanish words.
* Change some of the hard-to-remember words and replace them
  with some easy-to-remember words from CREA's list.

ulif / diceware

Add spanish word list #99