Changes to Identifies keywords, key n-grams, key collocations and terms.

the query request parameter alnum was restricted to a list of enum values

the query request parameter simple_n was restricted to a list of enum values

for the query request parameter alnum, default value was changed from 0 to 1

for the query request parameter simple_n, default value was changed from 1 to 1

deleted the query request parameter k_attr

deleted the query request parameter keywords

deleted the query request parameter oneaplha

deleted the query request parameter terms

added the new optional query request parameter addfreqs

added the new optional query request parameter ngrams_max_n

added the new optional query request parameter onealpha

added the new optional query request parameter usengrams

added the new enum value 0.00 to the query request parameter alnum

added the new enum value 0 to the query request parameter simple_n

added the new enum value 1.00 to the query request parameter alnum

added the new enum value 1 to the query request parameter simple_n

added the new enum value WSCOLLOC to the query request parameter attr

for the query request parameter simple_n, the type was generalized from integer to string