Optimization of pure.base85.b85encode
This makes pure python base85 encoding 3x faster than before. Now it is only
40x slower than the C version.
dirty
M foo
% validate update of standalone execute bit change
1 files updated, 0 files merged, 0 files removed, 0 files unresolved
nothing changed
0 files updated, 0 files merged, 0 files removed, 0 files unresolved
0 files updated, 0 files merged, 0 files removed, 0 files unresolved