* add missing locales
* use t.Setenv instead of os.Setenv for tests
* locale: present y/n if localisation is not latin. Always accept y/n in every case
* question: use operation info for question
* edge case where localised n is equal to default y
* add tests for basic locales
* feat(aur): add option to limit concurrent downloads
Adds to config file option 'maxconcurrentdownloads' which if set to
value != 0, limits number of concurrent AUR downloads to specified.
Fixes#1763.
* fix lint issue
* Fix ContinueTask user prompt for locales with uppercase yes
The yes/y strings have to be converted to lowercase to enable matching of
the user input converted to lowercase. Otherwise, locales with uppercase
yes/y strings (e.g., German: `Ja/J`) will never match.
* Addess linter issue
* Remove obsolete lowercase conversion
* fix(alpm): fix callback text
* feat(yay): Add mixed search result
* remove old result structs
* add option for controlling query builder
* only set query builder after parsing args
* add parser args
* update manpage
* write test for results
* write test for results
* mixed source test
* only sort 1 time with every mode
This fixes#1674.
If search command included multiple packages and no results were found
in AUR, response from `query.queryAUR` was returned
as nil slice instead of non-nil empty slice and as nil slice is treated
during subsequent validation in `query.SourceQueryBuilder.Results` as
meaning that searching in AUR was not executed, command was failing.
Now empty non-nil slice is returned if results were not found.
jguer