This is the fifth, and hopefully the last candidate for the 1.0.0 release. It contains the following changes since the RC4 candidate:
1d708f2 - always put the inbox at the top of a sorted folder list
46949d7 - update themes to use svgs instead of pngs
5adde42 - fix problem with expanding non-ascii folder names in imap
0f9fb18 - fix potential js warning
05aad35 - layout fixes for imap message parts + inline message view
e428a97 - better reply to address handling
4e0c049 - fix for To/From formatting in IMAP message lists