v0.6.0: Update MARS types (#124)

## Purpose

FDB data is now archived with different MARS types, pf and cf. We should
be able to retrieve this data with correct requests.

v0.5.0: Rel 0.5.0 (#121)

## Purpose

Prepare release 0.5.0

v0.5.0-rc1: prepare rel 0.5.0-rc1 (#116)

Co-authored-by: Nina Burgdorfer <[email protected]>

v0.4.0: Release 0.4.0 (#101)

## Purpose

Prepare release 0.4.0

v0.4.0-rc1: Prepare rel 0.4.0-rc1 (#94)

## Purpose

Prepare release candidate for version 0.4.0

v0.3.0: Prepare release 0.3.0 (#83)

## Purpose

Prepare the release of version 0.3.0

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Co-authored-by: Nina Burgdorfer <[email protected]>