Fix typo in readme
Bump copyright years
Move fftw3 to a git submodule and update to 3.3.3
Port BuildTasks to C#

VS Express Edition doesn't support F#.
Grab the .mo files for the installed from the po directory

Grabbing them from the package's src directory just adds another step
that needs to be done manually whenever a translation changes.
Fix some warnings when compiling with gcc
Also return full paths from aegisub.dialog.save
Kill the Update Dependencies project

Move downloading the ICU data file to the ICU project, since that's the
only thing that was left.