For interested people, I'm going to paste the changelog between 1.0.0 and 1.1.2 below. Also, keep in mind the price now raised to $17.99.
New in 1.1.2:
HRTF/Steam Audio should now gracefully disable itself if it cannot load properly instead of throwing a steam audio was not initialized exception.
It is now possible to toggle HRTF any where that page up/down function as volume keys, meaning you can now set HRTF to your desired state in the menu before starting a game.
Fix a runtime error that would take place if you aborted scuba diving gone wrong during it's countdown.

New in 1.1.1:
Fixes recently introduced assertion failure that would appear in Constant Destruction.
Adds German and Portuguese automatic translations.

New in 1.1.0:
Updated readme to add note about menu music volume keys.
Fix brick death sound in boulder road learn game sounds menu.
Fix broken language stringg in Electrified Acid learn game sounds menu.
You can now select an inventory item in Constant Destruction with the number row as well as tab/shift+tab/arrow keys.
Fixed a bug in color collection where you could die if you teleported behind a register you'd already successfully passed.
Fixed a bug where you'd be told you got a new high score if you'd already previously gotten the exact same score.
Thanks to various suggestions, Added extensible postgame configuration on both a global and per-game basis, allowing you to control what format the summary is displayed in as well as controling the copying to clipboard, score posting and the new play again options.
Updates Spanish language translation.
You can now cancel gameplay without counting an abort in your statistics by pressing escape during the countdown before a game.
It is now possible to use page up and down to change music volume from within a game as well as menus.
An update to NVGT improves HRTF panning, previously it was delayed by a small amount. Now you'll notice that you can aim at things more easily without overshooting and needing to correct. The update also fixes a performance issue where too much CPU was being used and improves the speed of SAPI.
Adds a default output device option to the audio device selection menu.
Adds the stat which shows how many of each specific game was aborted.
Fixed a bug where input boxes with no default gvalue would start with an invalid selection.
Gets rid of extra message when menu items are deleted such as when enabling screen reader support.

New in version 1.0.2:
It is now possible to skip game countdowns.
Fixed the display of a few language strings such as in the death message of Constant Christmas which had broken at the last minute.