motivation: catch up to fixes and improvments in underlying library
changes:
* vendor latest version of libbacktrace
* update vendoring script to exclude some new files that are not needed
motivation: make sure library works as expected
changes:
* add a Sample target we can use for testing
* add a test to make sure backtraces are printed as expected
* make docker tests use a release version for a more realistic tests
* update linux test generation script to work with release builds
motivation: setup ci for the project
changes:
* add docker setup for testing 5.0, 5.1 and 5.2
* fix license headers
* add sanity script
* format
* regenerate tests to match convention
Yim Lee
tomer doron
tomer doron
Ian Partridge