The parser should accept additional elements to each
uses-permission entry, in case more XML attributes is added to
<uses-permission>. <uses-permission> has had two attributes
since the beginning.
Other changes to this JSON data structure are bad index-v1
format, and will cause crashes:
* Removing an element e.g. null from a uses-permission entry
would be invalid index-v1 JSON, since that structure mirrors
the uses-permission AndroidManifest.xml element, which has a
long standing fixed definition of name/maxSdkVersion. That
should crash so that fdroidserver authors know they are
generating invalid index-v1.
* setting versionCode to anything but an int is invalid index-v1
JSON, and should crash. versionCode has been defined as an
32-bit signed integer value since the beginning of Android.
* <uses-permission android:name=""> has been defined as a string
since the beginning of Android.
https://developer.android.com/guide/topics/manifest/uses-permission-element.html
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