Log Message:
spleen: update to 1.5.0.

Spleen 1.5.0 (2019-10-01)

- Shift the middle bar of the digit '3' one pixel up, for better
  alignement (12x24 version)
- Tweak the digit '7' for consistency with other sizes (5x8 version)
- Make the 'Z', 'z' and derived characters more balanced, as is the
  case with other sizes  (12x24 version)
- Tweak the digit '2' for consistency with other sizes (12x24 version)
- Make the slash inside the digit '0' one pixel thiner (32x64 version)
- Add light box drawings characters in the 5x8 version
- Add full support for the Braille Patterns Unicode block in the 5x8 version
- Add branch, LN, and padlock icons for Powerline users
- Also provide a fonts.alias file, along with fonts.alias-spleen

Spleen 1.4.0 (2019-09-24)

- Add left and right single quotation mark characters, both identical to
  an apostrophe
- Add left and right double quotation mark characters, both identical to
  ASCII quotation mark
- Add bullet and horizontal ellipsis characters
- Add the eight trigrams
- Add full support for the Block Elements Unicode block

OK kamil@