Merge branch 'hotfix/0.9.29.1' into develop
update appcasts: manual update from 0.9.29.0 to 0.9.29.1.
compatible with windows 8.1 sdk.
update readme: drop support for Windows XP SP2.
RC file encoding: utf16le -> cp936.
replace essay.kct with essay.txt.
RimeWithWeasel: mode change notifications for 'ascii_punct'.
Weasel 0.9.30 release.
Merge branch 'release/0.9.30'