itch.io

Ok, so 0.4.4.1 being public is just how dev wanted it to be, that's his model of publishing updates: he adds a feature, releases it as an early access build for subscribers first (X.1.0), then fixes bugs (X.1.1), then adds another feature and polish to what was earlier added (X.1.2), another fix (X.1.3) - either makes this version public or adds another big feature for subscribers firsr (X.2.0), another batch of fixes (X.2.1) and this ends up being public - total chaos 

If I understood your second question correctly:

For Kaede (Yuna's friend) to appear you need to convince her to stay for sleep over at the end of Fridays party (have high skills, a little drunkness and high enough impression) - she will appear that same night and every night if it's raining (~30% for the rain to occur, or you can use "rain stick" in the morning to have 100% for rain that same night)

As for clothes and accessories - you need to buy them from Syn - vendi found in the beach area while running at night, once you buy sweater or accessories, during the night try opening drawers of a cupboard on the left side of the bed to find desired accessory/clothing and just click it to dress Yuna in it (only she can be dressed now)

Cheers