Add 45 new Traditional Chinese characters

Drawn myself, CC0 (like all the code I commit to this project).

Actually there are 70 of them in this commit, but 25 are overlapping
with Baekmuk Gulim.
Merge remote-tracking branch 'upstream/master' into chinese-font
Convert CR LF to LF, add 爸
+10 Chinese characters (喵沉傻吵桌拼奶伙牠厲), some fixes
+21 character (闆姊啪丌污咱玫垃圾逛繳彥扯么擋躲咖踢穌俱唷)

Also, 麵閱擎 redrawn (because versions from Baekmuk Gulim didn’t blend
into Shinonome well)
+15 new characters (咪啡嗨壢撿唬挖瞧咦 傢褲妮糕耍)
+8 missing Trad. Chinese chars (哎喂拋烤扭髒呦摔) = 100 chars
+10 Trad. Chinese characters (噁祂踩仿喻喲攔謊螞划)
Merge remote-tracking branch 'upstream/master' into chinese-font
+15 trad. chin. characters (躺閩砸蟑吞詗歧掙攏婷哼佬涂掰墊), 125 total
Don't require the compiler to multi-byte/wide-char conversions
Move PNG writer into image_png.cpp
Make bytes(), bpp(), pitch() return int to minimise warnings
Keep flash-level as double
Make int->bool conversions explicit (quieten warnings)
Merge pull request #359 from rohkea/chinese-font

Add 125 Trad. Chinese characters to Shinonome
Guard MSVC-specific pragma
Merge pull request #362 from glynnc/master

Deal with some warnings