Support 1.10 again

Author: kojix2

README.md

@@ -6,10 +6,11 @@ experimental Ruby bindings for the HDF5 library
 
 ## Supported HDF5 Versions
 
+- HDF5 1.10
 - HDF5 1.14
 - HDF5 2.x
 
-HDF5 1.10 and older are not supported.
+HDF5 versions older than 1.10 are not supported.
 
 ## Basic I/O
 

lib/hdf5/ffi.rb

@@ -44,6 +44,8 @@ def self.attach_variable(*)
     release = release_ptr.read_uint
 
     @backend = case [major, minor]
+               in [1, 10..13]
+                 'ffi_10'
                in [1, 14..]
                  'ffi_14'
                in [2.., _]