I just wrote a wall of text explaining you why I did this, when my browser crashed and the text was gone. I don't want to type everything again, so here is the short version. The original idea was that we all combine our textures in to one pack. Since I haven't heard from Giammod in the past weeks, I did it this time.
I've been busy, IRL, sorry. I did originally have the idea of a Misa community pack that combine the community's textures and Misa's textures into one pack. However Misa said she didn't approve of her textures being combined with others' textures under her name. which is very understandable. So, she gave me permission to make an 'official' version of her pack updated for the new 1.13 format. The community pack was scrapped and the textures were used with credit and permission[where possible] to fill holes in the 1.13 pack that Misa didn't make. Textures and features I made for the Misa community pack were split off into a patch using my name. Henceforth, Misa requested that unless there's another major pack format change like between 1.12 and 1.13 future versions like 1.14 should be in the form of patches.
In Minecraft patches are used in the resource pack folder and applied in game by having the base pack (Misa 1.13) added first (above the default) and patches added above the base pack.