Tinkoff converter fails for ofxstatement>=0.6.5

[zeldigas]

There is additional assertion introduced in code that crashes plugin: https://github.com/kedder/ofxstatement/commit/e536af21efbfadff56b59cd1938ae822b101aa90#diff-10d272377037b6a0f0c3f35a1cd4f582fa58e5ebe0aa7632df73eafd3dddef0aR152

Looks like additional property need to be added to each parsed line to make it work.

P.S. this is just FYI ticket, I'll try to dig into issue and send PR this or next week.