Add option to ignore ShrinkOnLoad functionality

[smartinov]

Referencing issue #220 where shrink on load messes up the quality

[smartinov]

I see that the test is failing, but what's up with

The command "diff -u <(echo -n) <(gofmt -s -d ./)" exited with 1.
0.17s$ diff -u <(echo -n) <(go vet ./)
The command "diff -u <(echo -n) <(go vet ./)" exited with 0.
0.11s$ diff -u <(echo -n) <(golint ./)

Does that mean that it's not formatted correctly? Since all tests are pasing!