surveytable 0.9.9

• set_opts(output = "raw"): unformatted / raw output. This is useful for getting lots of significant digits.
• Simplified confidence interval for proportions adjustment: adj argument to set_opts() and svyciprop_adjusted().
• Show the test statistic for all tests.
• Conditional independence test: tab_subset() with argument test set to the
  value of interest.
• Confidence intervals for numeric variables.
• Excel tables and charts! set_opts( output = "excel", file = "my_workbook" )
• Improved conversion of tables to data frames with as.data.frame().
• The interface for CSV printing is now the same as for all other kinds of printing: set_opts( output = "CSV", file = "my_file" )