liblzma breaking manylinux compatibility

[pattonw]

We would like to support all compressions supported by rust-n5, but for manylinux compatibility the n5 features were changed in cargo.toml:

n5 = { version = "0.4", default-features = false, features = ["filesystem", "bzip", "gzip", "lz", "xz", "use_ndarray"]}

to

n5 = { version = "0.4", default-features = false, features = ["filesystem", "bzip", "gzip", "use_ndarray"]}

To reintroduce support for both compression types:

• add n5 features "lz" and "xz" to cargo.toml
• add LZ4 and XZ to compression types in pyn5/common.py
• add lz4 and xz to 'conftests.py'

[clbarnes]

This is possibly my fault - I've been using the gnu toolchain; do you have to use musl or something to target manylinux?

[clbarnes]

core rust-n5 issue: aschampion/rust-n5#28