* Meta data: add category "Map"
Reason: IconZoomIn, IconZoomOut are in "Map", this should be as well
* Meta data: add category "Map"
Reason: icons precedes with 'map'
* Meta data: add category "Development"
Reason: IconAB is related to AB test (as the tags indicate); IconAlt is a shortcut key; IconAuth2FA and IconLogs are highly related to software development; packages icons have tags "npm", so they are development-related too; IconPrompt and IconSourceCode are very obvious.
* Meta data: add category "Map"
* Meta data: add category "Games"
reason: they are all play cards
* Meta data: add category "E-commerce"
reason: all clothing and cloth hangers (there aren't much clothes icons currently, please determine if it's appropriate to do so)
* Meta data: add category "Games"
reason: Joker is closely related to play cards
* Meta data: add category "Food"
reason: all food/beverage containers
* Meta data: change category to "Food"
reason: IconToolsKitchen3 is uncategorized before, but IconToolsKitchen2 and IconToolsKitchen are currently in "Map". I'm not quite sure if this change is correct. Please reject this commit if I'm wrong.
* Meta data: add category "E-commerce"
reason: diaper is similar to clothes (sth. baby wear), perfume and flip flops are also sth. people "wear"
* Meta data: add category "Games"
* Meta data: add category "Development"
* Meta data: add category "Gestures"
* Meta data: add category "Numbers"
* Meta data: add category "System"
Reason: all other locks are now also in "System"
* Meta data: add category "Math"
Reason: meter cube and meter square are related to math calculations
* Meta data: add category "System"
Reason: another lock.
* Meta data: add category "Games"
Reason: all weapons.
* Meta data: add category "E-commerce"
Reason: another clothes.
* Meta data: add category "Buildings"
Reason: window and wall are main parts of a building, a podium means a location(building with specific purpose) people give speech
* Meta data: add category "Games"
Reason: horse toy is sth. children play with, archery arrow is part of a weapon
* Meta data: add category "Games"
Reason: a weapon
* Meta data: add category "System"
Reason: all icons with a "scan frame". We already have IconBodyScan, IconPhotoScan, IconUserScan in category "System".
* Meta data: add category "Games"
Reason: scary ghost and pumpkin jack nicely fit with "Games"(I guess).
* Meta data: add category "Games"
Reason: scary ghost and pumpkin jack nicely fit with "Games"(I guess).
* Meta data: add category "E-commerce"
* Meta data: add category "Mood"
* Meta data: add category "Symbols"
* Meta data: add category "Text"
* Meta data: add category "Symbols"
* Meta data: add category "Games"
Reason: piano is sth. you can play with, pick is a symbolic item in Minecraft.
* Meta data: add category "Games"
Reason: looks like toys to me(not sure about these two).
