wordbankr 1.0.0

• updates for new structure of the Wordbank database, including functionality for data on children's language exposures and health conditions
• renaming of fields and arguments for consistency and clarity
• addition of arguments indicating which sets of child information to include in get_administration_data()
• coding of production/comprehension values in get_instrument_data()
• graceful failure for connection issues
• deprecation of quantiles functionality