Updates the energy recovery rate calculation to reflect the changes made
in the 9th January 2020 game update.
Each individual piece of graceful now boosts your recovery rate by 3%,
with an extra 1% for the top and legs. With the full set, an extra boost
of 10% is added, totalling 30%. Previously, there was no boost for
individual pieces, instead the full set was required for a flat boost of
30%.
Sean Dewar