fix issue #475

Signed-off-by: xiehuc <xiehuc@gmail.com>
add notify about compile flags

Signed-off-by: xiehuc <xiehuc@gmail.com>
fix #477

Signed-off-by: xiehuc <xiehuc@gmail.com>
change LwqqAction to LwqqEvents and LwqqArguments

Signed-off-by: xiehuc <xiehuc@gmail.com>
fix format_append without zero fill in action_about_webqq

Signed-off-by: xiehuc <xiehuc@gmail.com>
update CREDIT

Signed-off-by: xiehuc <xiehuc@gmail.com>
update reference

Signed-off-by: xiehuc <xiehuc@gmail.com>
enhance send group picture --- add auto resend

Signed-off-by: xiehuc <xiehuc@gmail.com>
Merge branch 'upstream/preview' into unstable