Resolve "RGAA 4: implementation 1.1.*"

Closes #452 (closed)

• 1.1.1 --> see: rgaav4#12
• 1.1.2 --> see: rgaav4#13
• 1.1.3 --> see: rgaav4#14
• 1.1.4 --> see: rgaav4#15
• 1.1.5 --> see: rgaav4#16
• 1.1.6 --> see: rgaav4#17
• 1.1.7 --> see: rgaav4#18
• 1.1.8 --> see: rgaav4#19