Updates to v9.15.8.
My main motivation is to fix a minor issue with TOML highlighting.
This keeps the same language list as before with the addition of a new "common"
language `properties` and added `julia` because someone asked for it and I like
julia. The full list from building:
:common armasm d go handlebars haskell julia rust scala swift x86asm yaml
- apache
- armasm
- bash
- coffeescript
- cpp
- cs
- css
- d
- diff
- go
- xml
- handlebars
- haskell
- http
- ini
- java
- javascript
- json
- julia
- makefile
- markdown
- nginx
- objectivec
- perl
- php
- properties
- python
- ruby
- rust
- scala
- shell
- sql
- swift
- x86asm
- yaml