Changes from 2.1.0 to 2.1.1

• Fixed a nasty bug introduced in 2.1.0 that affects to the blosclz codec in ARM arch. See #392.

• Added support for external zlib-ng (see #393). Thanks to Mark Harfouche.

• Fixed more compiler warnings (#394). Now C-Blosc2 should be relatively free of them.

• Fixed more fuzzer issues.