Fix snapping audio markers to markers from other selected lines
Shove simple getters in AudioTimingControllerDialogue into the class declaration
Add version information to the windows executable

Closes #913.
Extract installer strings for translation
Regenerate aegisub.pot
Default to the language selected in the installer
Make the "Create a start menu icon" string translatable
Ask whether to check for updates in the installer

Gets rid of the last annoying modal dialog on first startup.
Add missing check for if the context has been initialized in the crash handler
Update fontconfig
Update Chinese translations. Closes #1755.
Add YCbCr Matrix to the script properties dialog
Make both source and destination resolution overridable in the resampler
Make AR-changing resampling more user-friendly

Add modes where the borders to add or remove are automatically
calculated rather than forcing the user to do it manually, and hopefully
make it a bit clearer what exactly will happen.
Fix resampling drawings with AR changes

The shift from margins should be applied only to the line's position,
not to each point in the drawing, and the scale needs to compensate for
that the scale on the style is being changed as well.
Round negative drawing coordinates correctly
Don't try to shift line margins that are 0
Add an option to resample the script to the resolution mismatch dialog

Closes #1382.
Fix non-pch compilation
Force-enable native TLS in wxWidgets

It is off by default on Windows due to that it breaks if a wx-using
library is loaded with LoadLibrary on XP, but that is not a use-case we
care about.