Major changes in 1.28.4
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* common: Fix potential crash caused by missing g_strdup
* fuse: Prevent potential crash if file handle is not set
* sftp: Prevent potential crash in case of parsing error
* google: Prevent potential crashes if resolve_dir fails
* gphoto2: Fix x-content-types setup
* google: Fix reported file size
* sftp: Limit writes to 32768 bytes
* daemon: Bump maximum read channel buffer size