chore: bump version to v1.0.0 (#155)

Our next release will be v1.0.0 as part of our adherence to
semantic versioning (semver). While there are no major changes,
commits 32f0338 and d354e96 introduced some API changes that
are not backward-compatible.

chore: bump version to v0.2.2 (#134)

chore: bump dd-trace-cpp version (#127)

chore: bump version (#109)

release candidate v0.1.12

bump version to v0.1.11

release candidate v0.1.10

release candidate v0.1.9

version-checking release script (#27)

* bin/check-version

* add release script