Wrong implementation in merge_requests add

[geeeeeeeeek]

add: (projectId, sourceBranch, targetBranch, assigneeId, title, fn = null) =>
    @debug "Projects::addMergeRequest()"
    params =
      id:            Utils.parseProjectId projectId
      source_branch: sourceBranch
      target_branch: targetBranch
      assignee_id:   parseInt assigneeId
      title:         title
    @post "projects/#{Utils.parseProjectId projectId}/merge_requests", params, (data) => fn data if fn

According to Gitlab API doc:

Parameters:

• id (required) - The ID of a project
• source_branch (required) - The source branch
• target_branch (required) - The target branch
• assignee_id (optional) - Assignee user ID
• title (required) - Title of MR
• description (optional) - Description of MR
• target_project_id (optional) - The target project (numeric id)
• labels (optional) - Labels for MR as a comma-separated list

assignee_id should be optional. But passing a undefined into parseInt returns NaN, which would be a wrong parameter to call the API.