vala 0.45.2 已发布。vala是专为gnome环境准备的开发语言，之所以vala会出现，是因为目前的glib,gio,gtk+,gnome-lib等等的C语言接口开发起来实在太繁琐，而同时，如果采用Java，C++这些东西，那又显得太臃肿。
更新：
===========
* Various improvements and bug fixes:
- Only warn about imcompatible type of external construct property [#803]
- codegen: Use array_length of collection variable instead of expression
- girparser: Skip 'attribute' elements
- girwriter: Report error on secondary top-level namespace [#805]
- genie: Drop unused "writeonly" token
- genie: Make 'self' match its TokenType name
- tests: Null-terminate arrays for compatibility test of uint8 / uchar [#809]
* Bindings:
- gmodule-2.0: Build from GIR
- glib-2.0: Add Unicode 12.0 symbols
- gstreamer: Update from 1.17.0+ git master
- gtk+-3.0: Update to 3.24.9~18177388
- gtk4: Update to 3.96.0+8cfdd6c5
- webkit2gtk-4.0: Update to 2.25.1
- vapi: Update GIR-based bindings
更新说明：
https://gitlab.gnome.org/GNOME/vala/raw/master/NEWS | 
