Adds SyTest CI through CircleCI. Also need to add all the tests that currently pass to testfile, but I don't think that's a hard blocker for merging.
* Use absolute links in pull request template Relative links don't work in most places Signed-off-by: Aaron Raimist <aaron@raim.ist> * Use matrix.to (for now) instead of linking to riot.im/develop Signed-off-by: Aaron Raimist <aaron@raim.ist>