Use LibMseed.jl for miniSEED IO

[anowacki]

• Add miniSEED file writing with write_mseed.
• In read_mseed, make the following breaking changes:
  • Move the T argument to the end to better match the order of arguments in Base.read.
  • Change the default trace type returned when reading, since LibMseed.jl reads properties like sampling rate in the same precision as the file.
  • Remove the maximum_offset keyword argument.
• Remove the dependency on SeisIO and so remove the SeisIOIO submodule.
• Depend instead on LibMseed.jl.
• Change the order of arguments in Miniseed.read (but not a public API so not breaking).
• Add a single-argument method to origin_time to just return the origin time of the trace.

[codecov[bot]]

Codecov Report

Merging #22 (168ad95) into master (d4113cb) will decrease coverage by 0.53%. The diff coverage is 97.46%.

@@            Coverage Diff             @@
##           master      #22      +/-   ##
==========================================
- Coverage   73.89%   73.36%   -0.54%     
==========================================
  Files          20       18       -2     
  Lines        1586     1558      -28     
==========================================
- Hits         1172     1143      -29     
- Misses        414      415       +1     

Impacted Files	Coverage Δ
src/io/Miniseed/Miniseed.jl	97.22% <97.22%> (-2.78%)	:arrow_down:
src/input_output.jl	98.95% <100.00%> (-0.02%)	:arrow_down:
src/util.jl	100.00% <100.00%> (ø)

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