Update changelog for v7.0.1

Prepare v7.0.0 release (purescript-node#43)

* Update CI to build with the latest version of the compiler

* Update the bower repository URL to match the URL in the registry

* Upgrade bower dependencies

* Update the changelog

Merge pull request purescript-node#35 from purescript-node/number-rea…

…d-write

Use Number for reading and writing, fixes purescript-node#25

Update .gitignore

Merge pull request purescript-node#29 from matthewleon/fromArrayBuffer

Buffer.fromArrayBuffer

Merge pull request purescript-node#27 from matthewleon/toArrayBuffer

toArrayBuffer. resolves purescript-node#22

Merge pull request purescript-node#21 from justinwoo/fix-enc-typo

fix typo causing undefined encoding in buffers

Merge pull request purescript-node#19 from anilanar/update-deps-0.11.x

v0.11.x

Merge pull request purescript-node#16 from rightfold/master

Fix a bug and a documentation mistake

Merge pull request purescript-node#13 from purescript-node/update-build

Update build