v2.8.0

8be3cab Fix bug: exec cmd error when cmd is too more
5917b51 Fix bug: exec cmd on web when cmd is too more
1e7dadb Fix js bug
9d71713 Fix bug: write map in parallel
4326719 exec cmd on Web: Adapt to new ways
6d8dead Improve remote exec command
fc4a14c Support config file

Precompiled:
rttys-linux-386.tar.gz
rttys-linux-amd64.tar.gz
rttys-windows-386.zip
rttys-windows-amd64.zip