v0.3.2

Improvements:

• Upgrade MatrixKit version (v0.4.1).

Bug fixes:

• Make share/save/copy work for e2e attachments.
• Wrong thumbnail shown whilst uploading e2e image (https://github.com/vector-im/vector-ios#795).
• [Register flow] Register with a mail address fails (https://github.com/vector-im/vector-ios#799).
• Fix padlock icons on text messages.
• Fix a random crash when uploading an e2e attachment.