2.4.0

Improvements:

• Support the [ ] form of test (#8)
• Highlight a ~ in redirect paths
• Distinguish arguments which might be paths with meta.parameter.argument.path
• Distinguish option and argument parameter types, and long and short option types (as well as the "end of options" option).
  We now provide the following scopes:
  • meta.parameter.option.long
  • meta.parameter.option.short
  • meta.parameter.option.end
  • meta.parameter.argument
  • punctuation.definition.option.long.begin
  • punctuation.definition.option.long.separator
  • punctuation.definition.option.short
  • punctuation.definition.option.end
• Distinguish operator types.
  We now provide the following scopes:
  • keyword.operator.control
  • keyword.operator.pipe
  • keyword.operator.redirect
  • keyword.operator.range

Bugfixes:

• Some structures were not highlighted correctly if they were immediately followed by the EOF
• Unescaped spaces in brace expansion weren't marked up as invalid
• Quoted integers were not allowed as file descriptors in redirection

Internal changes:

• Rename "argument" to "parameter"
• Rename "nonoption argument" to "argument"
• Rename "command chain" to "pipeline"