[gjs] Created tag 1.48.3

[Philip Chimento <pchimento src gnome org>]

The unsigned tag '1.48.3' was created.

Tagger: Philip Chimento <philip chimento gmail com>
Date: Sat May 6 00:14:14 2017 -0700

    Version 1.48.3
    
    - Closed bugs:
    
      * arg: don't crash when asked to convert a null strv to an array [#775679,
        Cosimo Cecchi, Sam Spilsbury]
      * gjs 1.48.0: does not compile on macOS with clang [#780350, Tom Schoonjans,
        Philip Chimento]
      * Modernize shell scripts [#781806, Claudio André]

Changes since the last tag '1.48.2':

Claudio André (2):
      CI: modernize Travis testing script
      maintenance: modernize shell scripts

Cosimo Cecchi (1):
      arg: don't crash when asked to convert a null strv to an array

Philip Chimento (3):
      build: Post-release version bump
      jsapi-util-args: Mark functions as always-inline
      release: Prepare for 1.48.3

Tom Schoonjans (1):
      arg: Include headers for std::abs()