v4.0.4

• Added tinfo to LIBS if detected
• Fixed compilation with librrd-dev v1.8.0+
• Fixed compilation against musl libc
• Removed dh-systemd
• Increased ICAO_FILTER_SIZE
• Fix calloc transposed argument warning. Closes #37.
• New protobuf compiler version.

v4.0.3

Merge pull request #33 from stintel/musl

Fix compilation against musl libc