Making libbacktrace optional (#189)

* Making libbacktrace optional

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Co-authored-by: Stefan Toma <[email protected]>

Bump the version to 0.2.6

Signed-off-by: Marco Magdy <[email protected]>

Bump the version to 0.2.5

Signed-off-by: Marco Magdy <[email protected]>

Update the version of project to match the release

FindCURL module does not provide imported target on older CMake versi…

…ons (#49)

Fixes #48

Remove an extra colon that caused array lookup to fail

Make the packaging script "shellcheck" clean