The main motivation behind this is simplicity and correctnes, but the new small config library is also faster:
```
BenchmarkDefaultConfigProvider/Viper-16 252418 4546 ns/op 2720 B/op 30 allocs/op
BenchmarkDefaultConfigProvider/Custom-16 450756 2651 ns/op 1008 B/op 6 allocs/op
```
Fixes#8633Fixes#8618Fixes#8630
Updates #8591Closes#6680Closes#5192
Fix this by
1. Making sure that only numerical values are treated as plural counts
2. Making sure that `i18n.pluralFormNotFoundError` is not logged as a warning if `other` resolved.
Note that 2. isn't a new problem, but became visible because of the plural improvements in Hugo `0.83.0`.
Fixes#8492
There were some issues introduced with the plural counting when we upgraded from v1 to v2 of go-i18n.
This commit improves that situation given the following rules:
* A single integer argument is used as plural count and passed to the i18n template as a int type with a `.Count` method. The latter is to preserve compability with v1.
* Else the plural count is either fetched from the `Count`/`count` field/method/map or from the value itself.
* Any data type is accepted, if it can be converted to an integer, that value is used.
The above means that you can now do pass a single integer and both of the below will work:
```
{{ . }} minutes to read
{{ .Count }} minutes to read
```
Fixes#8454Closes#7822
See https://github.com/gohugoio/hugoDocs/issues/1410
Hugo 0.76.0 updated go-i18n from v1 to v2. This allowed us to set the TOML unmarshaler to use, so we set the one we use in other places in Hugo.
But that does not support dotted bare keys, which caused some breakage in the wild.
This commit fixes that by:
* Using go-toml for language files
* Updating go-toml to the latest version
This commit implements Hugo Modules.
This is a broad subject, but some keywords include:
* A new `module` configuration section where you can import almost anything. You can configure both your own file mounts nd the file mounts of the modules you import. This is the new recommended way of configuring what you earlier put in `configDir`, `staticDir` etc. And it also allows you to mount folders in non-Hugo-projects, e.g. the `SCSS` folder in the Bootstrap GitHub project.
* A module consists of a set of mounts to the standard 7 component types in Hugo: `static`, `content`, `layouts`, `data`, `assets`, `i18n`, and `archetypes`. Yes, Theme Components can now include content, which should be very useful, especially in bigger multilingual projects.
* Modules not in your local file cache will be downloaded automatically and even "hot replaced" while the server is running.
* Hugo Modules supports and encourages semver versioned modules, and uses the minimal version selection algorithm to resolve versions.
* A new set of CLI commands are provided to manage all of this: `hugo mod init`, `hugo mod get`, `hugo mod graph`, `hugo mod tidy`, and `hugo mod vendor`.
All of the above is backed by Go Modules.
Fixes#5973Fixes#5996Fixes#6010Fixes#5911Fixes#5940Fixes#6074Fixes#6082Fixes#6092
