Release share v0.52.0 (2024-01-06)

=== New features

* ssh/config: add method MarshalText and WriteTo
* lib/ssh: implement method Output on Client
* ssh/sftp: implement method MkdirAll on Client
* cmd/httpdfs: implement [libhttp.Server] with [memfs.MemFS]

=== Breaking changes

* ssh/config: refactoring the Config merge
* ssh/config: add parameter Config to NewSection
* lib/ssh: add parameter context to Execute method
* lib/time: remove UnixMicro and UnixMilli
* lib/io: removed, this package has been merged into "lib/os"
* lib/parser: removed, this package has been merged into lib/strings

=== Bug fixes

* ssh/config: fix setting the default values
* ssh/config: set the Hostname if its not set on [Config.Get]
* http/sseclient: fix data race on [Client.Close]
* http/sseclient: fix Retry value not set to millisecond
* ssh/sftp: fix Stat on empty remote file name
* ssh/sftp: fix non-nil returned error on Close

=== Enhancements

* ssh/config: merge the Section slice values on [Section.merge]
* ssh/config: set the default UserKnownHostsFile in setDefaults
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