title: increase iterations for new version of lmer?
body: <p>I just updated lme4 to version 1.0-4 and when I run lmer() my mixed effects model, which was converging before, now prints this warning:</p>
  
  <pre><code>Warning message:
  In (function (fn, par, lower = rep.int(-Inf, n), upper = rep.int(Inf,  :
    failure to converge in 10000 evaluations
  </code></pre>
  
  <p>So, I'd like to try to increase the number of iterations to see if I can fix this. (I must say I  have no idea what is causing the warning, as the first part of the message sounds a bit opaque). In any case, I read in the documentation that now I should use <strong>lmerControl()</strong>, but I haven't been able to implement it. Could someone give me a specific example of how you'd do it for concreteness? (the Help file doesn't help). Here is my model:</p>
  
  <pre><code>m &lt;- lmer(RT ~ Factor1*Factor2 + (0+Factor1+Factor2|Subject) + (1|Subject)  + (1|Item) + (0+Factor1+Factor2|Item), data= data)
  </code></pre>
  
  <p>Thanks a lot!</p>