Here is table that shows the new keys in the options.txt file.
name
old key
new key
pencil_tool_key
d
a
move_tool_key
a
g
zoom_in_tool_key
f
q
zoom_out_tool_key
g
w
find_selection_key
c
m
calc_key2
m
c
prev_color_key
,
d
next_color_key
.
f