So he released a version 1.0.5 just now, some updates to performance from the looks of it, for people who want to know what it is:
Update:Ver.1.0.5
1) Fix a bug caused by lightsource plugin.
2) Display game version number on title screen.
3) Refine several game text issues.
4) Fix the bug that fails in Boss battle force jump to game finale
5) Remove enemy breath animation in battle scene to increase performance
Also for people who want to know update version 1.0.4:
Update: Ver.1.0.4
1) Complete missing image resources of actress showing 'reluctant' face
2) Remove windows and small light sources in the town map to increase performance
3) Change notification to popup one by one instead of popup all at one time
4) Fix the issue that some notifications are missing space between words
5) Fix a bug caused by plugin 'YEP_InstantCast'
I seriously recommend waiting probably up to a week till he fixes a good amount of bugs and what not, I'd rather him not overwork himself, but working on the bugs fast could keep sales up. So just wait a couple days, and then redownload instead of downloading every update.