[doc] Prepare indexcontent for 1.1
[doc] Move release note for 1.0 in its own file
[doc] Upgrade several reference from 1.0 to 1.1
[bindings] Increment version number of pymorse
[doc] link `What's new` to GitHub issues

sed -i.bak -e "s@#\([1-9][0-9]*\)@\`#\1<https://github.com/morse-simulator/morse/issues/\1>\`_@g" what_new.rst
[doc] Mention contribution of Mehmet Murat Sevim
[doc] Another mention of 1.1 in install
[cmake] Prepare for 1.1
[cmake] Fix the build of stereopixel pocolibs bindings

There was two typos which prevent the compiler to get the correct build
flags.
Fix #438
[doc] add install note w/robotpkg
[builder] fix frequency comments
[builder] fix frequency comments (missing)
[pocolibs] Fix image output using viam poster

At some time, it needs a gross hack (a rotation of PI against pitch) to
have the image in the right sense, it seems to have been fixed at some
point.