Align graphics of basic smiley :) and frowny :(

[Crissov]

https://github.com/Ranks/emojione-assets/issues/15 https://github.com/Ranks/emojione/issues/461

In Emojione 2.x, the mouths of the Frowning Face and the Slightly Smiling Face are flipped versions of each other, normal Smiling Face and Slightly Frowning Face have considerably wider and narrower mouths, respectively. In Emojione 3.0, the designs of ☺️ ☹️ 🙂 🙁 do not match at all, since the basic smiley strangely acquired smiling eyes, raised eyebrows, blushing cheeks and the mouth of the slightly smiling face. (The eyebrows are currently the only clue to distinguish it from 😊 Smiling Face with Smiling Eyes U+1F60A.)

Implementation	😊 Smiling Face with Smiling Eyes	☺️ (White) Smiling Face	☹️ (White) Frowning Face	🙂 Slight Smiling Face	🙁 Slight Frowning Face
Emojipedia aliases	^^, Smile, Happy Face, Smiley Face	Grinning Face, Happy Face, Smiley Face, Smiling	Megafrown	Slightly Happy	Slightly Sad
my emoticon	^^	:-) :)	:-( :(	:-] :]	:-[ :[
Google, Emojione, Facebook emoticon		:-) :)	:-C	:) :-) :] =) =] (: (=	:-( :( :[ )= =(
Facebook emote				smile	frown
Emojione 1
Emojione 2.2
Emojitwo
Emojione 3
Twemoji 2
Noto Emoji
Facebook
FB Messenger
Apple

[Crissov]

In other words, Frowning Face currently has the inverse mouth of Slightly Smiling Face. Smiling Face has a considerably larger mouth, Slightly Frowning Face has a considerably smaller mouth.

Pairs: Slightly Smiling/Frowning Faces on Twitter's Twemoji, Google's Noto (for Android 6-7) and Apple.