Merge branch 'doitsujin:master' into master

Merge branch 'attempt-merge-v2.5'

Check if sideload folder is exist

Merge tag 'v2.4.1' into attempt-merge-241

Version 2.4.1

README for MetroHash

I read UTF-8 Everywhere

Save hqx result into sideload buffer

Edit README for sideload capability

Allow 3X and 4X size

Merge remote-tracking branch 'upstream/master'