inti 0.6.0

• Fix for dev dplyr (Thanks @hadley)
• tarpuy_plotdesign()
  • Autoconvert as factor for plot design
  • Default names in plot to "row" and "columns"
• New function: design_repblock for "rcbd", "crd" for any factor number
• Yupana create by default the sheet locale = "en_US" to use the decimal point
• yupana_mvr allow to select specific numeric variables
• tarpuy_varlist adapted to field book app
• Tarpuy: new module for use the information in Field Book app https://play.google.com/store/apps/details?id=com.fieldbook.tracker
• Rename function: tarpuy_varlist ==> tarpuy_traits