TRS-80 compatibility and some DOS/V symbols

Added 30 new characters:
- ₩ U+20A9 WON SIGN
- ℀ U+2100 ACCOUNT OF
- ℁ U+2101 ADDRESSED TO THE SUBJECT
- ℅ U+2105 CARE OF
- ℆ U+2106 CADA UNA
- ℞ U+211E PRESCRIPTION TAKE
- ℡ U+2121 TELEPHONE SIGN
- Å U+212B ANGSTROM SIGN
- ∮ U+222E CONTOUR INTEGRAL
- ∯ U+222F SURFACE INTEGRAL
- ∰ U+2230 VOLUME INTEGRAL
- ≐ U+2250 APPROACHES THE LIMIT
- ≑ U+2251 GEOMETRICALLY EQUAL TO
- ≒ U+2252 APPROXIMATELY EQUAL TO OR THE IMAGE OF
- ≓ U+2253 IMAGE OF APPROXIMATELY EQUAL TO
- ≣ U+2263 STRICTLY EQUIVALENT TO
- ≦ U+2266 LESS-THAN OVER EQUAL TO
- ≧ U+2267 GREATER-THAN OVER EQUAL TO
- ≪ U+226A MUCH LESS-THAN
- ≫ U+226B MUCH GREATER-THAN
- ⊿ U+22BF RIGHT TRIANGLE
- ⌇ U+2307 WAVY LINE
- ⍾ U+237E BELL SYMBOL
- ￠ U+FFE0 FULLWIDTH CENT SIGN
- ￡ U+FFE1 FULLWIDTH POUND SIGN
- ￢ U+FFE2 FULLWIDTH NOT SIGN
- ￣ U+FFE3 FULLWIDTH MACRON
- ￤ U+FFE4 FULLWIDTH BROKEN BAR
- ￥ U+FFE5 FULLWIDTH YEN SIGN
- ￦ U+FFE6 FULLWIDTH WON SIGN

Fixed 1 character from my previous PR:
- Fixed U+1CDF9 to align with (mirror) U+2708.

img/charmap.txt

@@ -124,11 +124,11 @@
  U+0207_│⁰ ⁱ     ⁴ ⁵ ⁶ ⁷ ⁸ ⁹ ⁺ ⁻ ⁼ ⁽ ⁾ ⁿ
  U+0208_│₀ ₁ ₂ ₃ ₄ ₅ ₆ ₇ ₈ ₉ ₊ ₋ ₌ ₍ ₎
  U+0209_│ₐ ₑ ₒ ₓ ₔ ₕ ₖ ₗ ₘ ₙ ₚ ₛ ₜ
- U+020A_│      ₣ ₤     ₧     ₪   €
+ U+020A_│      ₣ ₤     ₧   ₩ ₪   €
  U+020B_│                          ₽   ₿
- U+0210_│      ℃           ℉         ℎ ℏ
- U+0211_│            №
- U+0212_│    ™       Ω ℧               ℯ
+ U+0210_│℀ ℁   ℃   ℅ ℆     ℉         ℎ ℏ
+ U+0211_│            №               ℞ 
+ U+0212_│  ℡ ™       Ω ℧       Å       ℯ
  U+0213_│ℰ
  U+0215_│⅐ ⅑ ⅒ ⅓ ⅔ ⅕ ⅖ ⅗ ⅘ ⅙ ⅚ ⅛ ⅜ ⅝ ⅞ ⅟
  U+0216_│Ⅰ Ⅱ Ⅲ Ⅳ Ⅴ Ⅵ Ⅶ Ⅷ Ⅸ Ⅹ Ⅺ Ⅻ Ⅼ Ⅽ Ⅾ Ⅿ
@@ -143,25 +143,26 @@
  U+021F_│  ⇱ ⇲
  U+0220_│∀ ∁ ∂ ∃ ∄ ∅ ∆ ∇ ∈ ∉ ∊ ∋ ∌ ∍ ∎ ∏
  U+0221_│∐ ∑ − ∓ ∔ ∕ ∖ ∗ ∘ ∙ √ ∛ ∜ ∝ ∞ ∟
- U+0222_│∠ ∡ ∢ ∣ ∤ ∥ ∦ ∧ ∨ ∩ ∪ ∫ ∬ ∭
- U+0223_│        ∴ ∵ ∶ ∷     ∺       ∾
+ U+0222_│∠ ∡ ∢ ∣ ∤ ∥ ∦ ∧ ∨ ∩ ∪ ∫ ∬ ∭ ∮ ∯
+ U+0223_│∰       ∴ ∵ ∶ ∷     ∺       ∾
  U+0224_│      ≃ ≄ ≅     ≈ ≉       ≍
- U+0226_│≠ ≡ ≢   ≤ ≥
+ U+0225_│≐ ≑ ≒ ≓
+ U+0226_│≠ ≡ ≢ ≣ ≤ ≥ ≦ ≧     ≪ ≫
  U+0228_│    ⊂ ⊃ ⊄ ⊅ ⊆ ⊇ ⊈ ⊉ ⊊ ⊋       ⊏
  U+0229_│⊐ ⊑ ⊒ ⊓ ⊔ ⊕ ⊖ ⊗ ⊘     ⊛ ⊜ ⊝ ⊞ ⊟
  U+022A_│⊠ ⊡ ⊢ ⊣ ⊤ ⊥     ⊨
- U+022B_│    ⊲ ⊳ ⊴ ⊵ ⊶ ⊷ ⊸
+ U+022B_│    ⊲ ⊳ ⊴ ⊵ ⊶ ⊷ ⊸             ⊿
  U+022C_│⋀ ⋁ ⋂ ⋃ ⋄ ⋅ ⋆   ⋈
  U+022E_│                            ⋮ ⋯
  U+022F_│⋰ ⋱
- U+0230_│⌀   ⌂           ⌈ ⌉ ⌊ ⌋ ⌌ ⌍ ⌎ ⌏
+ U+0230_│⌀   ⌂         ⌇ ⌈ ⌉ ⌊ ⌋ ⌌ ⌍ ⌎ ⌏
  U+0231_│⌐         ⌕     ⌘     ⌛⌜ ⌝ ⌞ ⌟
  U+0232_│⌠ ⌡               〈〉
  U+0233_│          ⌵ ⌶ ⌷ ⌸ ⌹ ⌺     ⌽ ⌾ ⌿
  U+0234_│⍀ ⍁ ⍂             ⍉   ⍋   ⍍ ⍎
  U+0235_│    ⍒     ⍕     ⍘ ⍙ ⍚ ⍛ ⍜ ⍝ ⍞ ⍟
  U+0236_│⍠ ⍡ ⍢ ⍣ ⍤ ⍥     ⍨   ⍪ ⍫ ⍬ ⍭ ⍮ ⍯
- U+0237_│  ⍱ ⍲ ⍳ ⍴ ⍵ ⍶ ⍷ ⍸ ⍹ ⍺         ⍿
+ U+0237_│  ⍱ ⍲ ⍳ ⍴ ⍵ ⍶ ⍷ ⍸ ⍹ ⍺       ⍾ ⍿
  U+0238_│              ⎇ ⎈ ⎉ ⎊ ⎋
  U+0239_│          ⎕
  U+023C_│                            ⏎ ⏏
@@ -446,6 +447,7 @@
  U+0FF7_│ｰ ｱ ｲ ｳ ｴ ｵ ｶ ｷ ｸ ｹ ｺ ｻ ｼ ｽ ｾ ｿ
  U+0FF8_│ﾀ ﾁ ﾂ ﾃ ﾄ ﾅ ﾆ ﾇ ﾈ ﾉ ﾊ ﾋ ﾌ ﾍ ﾎ ﾏ
  U+0FF9_│ﾐ ﾑ ﾒ ﾓ ﾔ ﾕ ﾖ ﾗ ﾘ ﾙ ﾚ ﾛ ﾜ ﾝ ﾞ ﾟ
+ U+0FFE_│￠￡￢￣￤￥￦
  U+0FFF_│                         <20>
  U+1016_│                              𐅯
  U+102A_│            𐊦