drop support for IE8

Signed-off-by: M.Satrya <satryabima24@gmail.com>
remove comment header

Signed-off-by: M.Satrya <satryabima24@gmail.com>
pre_get_posts problem

Signed-off-by: M.Satrya <satryabima24@gmail.com>
Version bump to 2.0