I didn't.
Mine was, basically, the following documents:
a) Form IMM1294;
b) Funds Proof (bank statements, investments...);
c) Commom-law, as my partner will go with me to Canada;
d) LOA;
e) CAQ;
f) Medicals, Passport, Photo...
g) Form IMM5257 showing the last trips I made
h) A Letter explaining...