Fix timeline updating bug when scrolled down

Closes #415 (closed)

ref: https://stackoverflow.com/questions/3464876/javascript-get-window-x-y-position-for-scroll#answer-3464890

added 1 commit

• aca3b371 - Use a cross browser safe solution to get scroll top

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This seems to be working...

unmarked as a Work In Progress

changed the description

mentioned in commit 82cd1252

merged