neuprintr v1.1

• Can now specify default dataset for a connection (#115, #116)
• Optimise neuprint_get_roiInfo() and neuprint_get_meta() (#113)
• More features for neuprint_ROI_hierarchy() (#110)
• break down queries that are too large (#89)
• neuprint_get_meta() has more efficient handling of duplicates (#92)
• Fix neuprint_read_skeletons() fails to pass on heal.threshold for >1 skeleton bug (#121)
• Fix and test for incomplete server url (#119)
• Make neuprint_login() more robust to variations in server specification (#118)
• Safe field catch (#111)
• Update test baselines for R 4.0 (#120)