bump up to 0.2.

git-svn-id: svn://svn.a-k-r.org/akr/escape/trunk@485 0ecacc03-ac1b-0410-941d-e442c79421a6

make reference manual a hyperlink.

git-svn-id: svn://svn.a-k-r.org/akr/escape/trunk@293 0ecacc03-ac1b-0410-941d-e442c79421a6