Added MutableFixedList::mut_values

[jorgecarleitao]

Pointed out by @ncpenke at DataEngineeringLabs/arrow2-convert#30

[codecov]

Codecov Report

Merging #886 (f1df103) into main (3b55eeb) will increase coverage by 0.16%.
The diff coverage is 0.00%.

@@            Coverage Diff             @@
##             main     #886      +/-   ##
==========================================
+ Coverage   71.61%   71.77%   +0.16%     
==========================================
  Files         335      337       +2     
  Lines       18212    18940     +728     
==========================================
+ Hits        13042    13595     +553     
- Misses       5170     5345     +175     

Impacted Files	Coverage Δ
src/array/fixed_size_list/mutable.rs	45.71% <0.00%> (-1.35%)	⬇️
src/io/ipc/read/array/null.rs	38.46% <0.00%> (-11.54%)	⬇️
src/io/ipc/write/mod.rs	91.66% <0.00%> (-0.65%)	⬇️
src/array/utf8/mod.rs	66.18% <0.00%> (-0.49%)	⬇️
src/io/ipc/read/file_async.rs	58.59% <0.00%> (ø)
src/io/ipc/write/file_async.rs	75.29% <0.00%> (ø)
src/io/parquet/read/deserialize/simple.rs	41.00% <0.00%> (+0.55%)	⬆️
src/io/ipc/write/common.rs	90.96% <0.00%> (+0.85%)	⬆️
src/compute/cast/mod.rs	95.14% <0.00%> (+0.90%)	⬆️
src/compute/arithmetics/time.rs	26.60% <0.00%> (+0.91%)	⬆️
... and 10 more

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