Adds new emojis based on the finalized [Emoji 5.0
spec](http://unicode.org/reports/tr51/index.html). Modifications to
some existing emojis included as well, see change list below for
specifics.
This change also moves the Twemoji version number to 2.3.
### New
* Star-Struck
* Face With Raised Eyebrow
* Exploding Head
* Crazy Face
* Face With Symbols Over Mouth
* Face Vomiting
* Shushing Face
* Face With Hand Over Mouth
* Face With Monocle
* Child
* Adult
* Older Adult
* Woman With Headscarf
* Bearded Person
* Breast-Feeding
* Mage
* Woman Mage
* Man Mage
* Fairy
* Woman Fairy
* Man Fairy
* Vampire
* Woman Vampire
* Man Vampire
* Merperson
* Mermaid
* Merman
* Elf
* Woman Elf
* Man Elf
* Genie
* Woman Genie
* Man Genie
* Zombie
* Woman Zombie
* Man Zombie
* Person in Steamy Room
* Woman in Steamy Room
* Man in Steamy Room
* Person Climbing
* Woman Climbing
* Man Climbing
* Person in Lotus Position
* Woman in Lotus Position
* Man in Lotus Position
* Love-You Gesture
* Palms Up Together
* Brain
* Orange Heart
* Scarf
* Gloves
* Coat
* Socks
* Billed Cap
* Zebra
* Giraffe
* Hedgehog
* Sauropod
* T-Rex
* Cricket
* Coconut
* Broccoli
* Pretzel
* Cut of Meat
* Sandwich
* Bowl With Spoon
* Canned Food
* Dumpling
* Fortune Cookie
* Takeout Box
* Pie
* Cup With Straw
* Chopsticks
* Flying Saucer
* Sled
* Curling Stone
* Flag for England
* Flag for Scotland
* Flag for Wales
### Modified
* Index Pointing Up
* Person Facepalming
* Man in Business Suit Levitating
* Person Getting Massage
* Hamburger
* Ogre
* Full Moon With Face
* New Moon Face
* First Quarter Moon With Face
* Last Quarter Moon With Face
* Japanese "vacancy" button
This adds the assets for the 72 new emojis from the Unicode 9.0 spec as
well as modifications to the bread, kaaba, and man in business suit
levitating emojis.
