Bug#943992: transition: qscintilla2, soname 13 -> 15

["Gudjon I. Gudjonsson" <gudjon@gudjon.org>]

Hi Paul

A bit more info. I have tested to compile all of the reverse dependencies of 
qscintilla2-2.11.2 and all compile without problems.

$apt rdepends libqscintilla2-qt5-13
libqscintilla2-qt5-13
Reverse Depends:
  Depends: sqlitebrowser (>= 2.10.2)
  Depends: sonic-pi (>= 2.8.4)
  Depends: qgis-plugin-grass (>= 2.8.4)
  Depends: openscad (>= 2.8.4)
  Depends: octave (>= 2.8.4)
  Depends: juffed (>= 2.8.4)
$apt rdepends python3-pyqt5.qsci
python3-pyqt5.qsci
Reverse Depends:
  Depends: mu-editor
  Depends: geophar
  Depends: eric

I hope that helps with the transition.

Regards
Gudjon