Better support for Bravura in LilyPond

[Daniel Benjamin Miller]

I'd like to share something: https://github.com/dbenjaminmiller/bmusicfonts

I personally prefer the Bravura design to Emmentaler/Feta, and there'd 
been some SMuFL support offered in the past (which was highly buggy and 
not really usable for professional scores in a few ways), as well as 
Profondo, a conversion of a pre-release version of Bravura into 
LilyPond's native font format (which also had some issues with dot 
placement). After much experimentation, I created some fonts and 
includeable files which allow for high-quality typesetting using 
Bravura. The SMuFL font is loaded for some stencils, and others come 
from a native LilyPond-format font (which is itself usable, though 
results will be better with the definitions file loaded).

Not all features of Bravura are currently supported (e.g., you can't use 
the built-in stylistic alternatives). Likely, that won't happen until 
SMuFL support comes to LilyPond (it's currently being worked on, I 
believe). But the output should already be pretty nice. It is for me 
(n.b., I use LilyPond principally at 17.82 size).

Note that this isn't a generalizeable method for all SMuFL fonts: the 
definitions file includes many specific tweaks for Bravura, which are 
easy to adapt, but the BMusicFont had to be put together largely 
manually, and this process is quite involved. I have little interest in 
adapting a second music font myself, but hopefully this work is useful 
to you.