title: R package 'partykit' unused argument in ctree_control
body: <p>I want to use the package 'partykit' for building classification trees and forests with ctree() and cforest().
  As my data set contains 50000 rows and 30 columns, I'd like to set minsplit to 150 and minbucket to 50.
  Unfortunately when I enter my code</p>
  
  <pre><code>xplr=ctree_control(mincriterion = 0.999, minsplit=150, minbucket=50)
  set.seed(123)
  cit999=ctree(as.factor(order) ~ startHour, data=transact_train, controls=xplr)
  </code></pre>
  
  <p>I get the following error message:</p>
  
  <pre><code>Error in ctree_control(...) : 
  unused argument (controls = list(teststat = "quad", testtype = "Bonferroni", mincriterion = -0.00100050033358353, minsplit = 150, minbucket = 50, minprob = 0.01, stump = FALSE, mtry = Inf, maxdepth = Inf, multiway = FALSE, splittry = 2, maxsurrogate = 0, majority = FALSE, applyfun = function (X, FUN, ...) 
  {
  FUN &lt;- match.fun(FUN)
  if (!is.vector(X) || is.object(X)) X &lt;- as.list(X)
  .Internal(lapply(X, FUN))
  }))
  </code></pre>
  
  <p>Can anyone tell me why this happens? </p>