libqt5scintilla2-dev 2.9+dfsg-9 (arm64 binary) in ubuntu xenial

 QScintilla is a text editor for Qt5 with features especially useful when
 writing and debugging source code. These include support for syntax
 styling, error indicators, code completion, call tips and margins.
 .
 This package contains development headers needed when developing
 C++ applications that use QScintilla 2 and Qt 5.