Release 0.3.0

See merge request !40

Add test for connection error if certificate is not valid

See merge request !39

Make integration tests runnable on Windows

See merge request !38

If the download transaction is not deleted, the file stays open (and will cause a crash of the test).

F fix deprecations

See merge request !37

Rename cppinttest

See merge request !36

Use LINKAHEAD_CLIENT_CONFIGURATION instead of CAOSDB_CLIENT_CONFIGURATION

Adapt for Conan 2

See merge request !35

- build
- test
- clean

-misc-include-cleaner,
-readability-identifier-length

- Remove references to CONAN_LIBS variables
- use find_package