Changelog for tahoe-chk-0.2.0.0

Changelog for tahoe-lafs-immutable-uploader

decode now checks the fingerprint in the read capability against the URI extension block in shares being decoded and signals an error instead of performing decoding if there are not enough shares where they match. (#18)
decode now checks the consistency of the "share hash tree" information in each share and signals an error instead of performing decoding if there are not enough shares where it is consistent. (#19)
decode now checks the consistency of each share's "blocks" and signals an error instead of performing decoding if there are not enough consistent blocks to complete decoding. (#20)
decode now checks the consistency of the ciphertext "segments" and signals an error instead of completing decoding if the segment hashes do not match the expected values. (#21)
Many changes to data types to reflect more of the scheme at the type level. Most of these changes are to (exposed) implementation details rather than the primary high-level interface and should not impact most applications.
The cereal, cipher-aes128, crypto-api, tagged, and monad-loop direct dependencies have been dropped. cryptonite (already a dependency) is now used for AES128 operations. (!54)

taggedPairHash now respects the size parameter passed to it.
The CHK capability parsers now signal error on overflow for the n, k, and size parameters.
The UEB parser now signals error on overflow for num_segments, needed_shares, total_shares, and n and k in the codec parameter fields.

Switch from base64 to base64-bytestring to avoid an encoding bug on ARM with GHC 8.6.5.