v2.0.5

Fetch and Cache previous row heights (#701) (Fixes #700)

Added new table prop isVerticalScrollExact (defaulted as false), which can be turned on to make vertical scrolls accurate.
This is done by making FDT fetch the row heights for ALL rows in the table.

There's also an internal cache so that FDT won't request keep requesting all rows on every render.
Incase the cached row height needs to be reset, the new public API updateRowHeights(rowIndex) can be used to reset the row heights starting from rowIndex until the end of the table.