Fix: shapella upgrade from rc1 to rc2

[TheDZhon]

Cumulative PR to update the previously released v2.0.0-rc.1

• [x] #730
• [x] #731
• [x] #733
• [x] #735
• [x] #736
• [x] #737
• [x] #738
• [x] #739
• [x] #741
• [x] #742
• [x] #748
• [x] #750
• [x] #751
• [x] #753
• [x] #754
• [x] #755

[TheDZhon]