txn: add header.get_decoded()

[codecov[bot]]

Codecov Report

Merging #34 into master will decrease coverage by 0.12%. The diff coverage is 0%.

@@            Coverage Diff             @@
##           master      #34      +/-   ##
==========================================
- Coverage    54.4%   54.27%   -0.13%     
==========================================
  Files           9        9              
  Lines         443      444       +1     
  Branches       91       92       +1     
==========================================
  Hits          241      241              
- Misses        202      203       +1

Impacted Files	Coverage Δ
lib/transaction.js	35.2% <0%> (-0.29%)	:arrow_down:

---

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[msimerson]

$ npm publish
npm notice 
npm notice 📦  haraka-test-fixtures@1.0.26
npm notice === Tarball Contents === 
npm notice 1.0kB package.json                              
npm notice 138B  .codeclimate.yml                          
npm notice 191B  .eslintrc.json                            
npm notice 235B  .travis.yml                               
npm notice 389B  appveyor.yml                              
npm notice 1.9kB Changes.md                                
npm notice 520B  index.js                                  
npm notice 1.1kB LICENSE                                   
npm notice 1.5kB README.md                                 
npm notice 722B  run_tests                                 
npm notice 1.9kB lib/connection.js                         
npm notice 421B  lib/line_socket.js                        
npm notice 1.8kB lib/logger.js                             
npm notice 6.4kB lib/plugin.js                             
npm notice 439B  lib/stub.js                               
npm notice 6.9kB lib/transaction.js                        
npm notice 5.0kB lib/util_hmailitem.js                     
npm notice 2.0kB lib/vm_harness.js                         
npm notice 1.8kB test/connection.js                        
npm notice 81B   test/fixtures/mock-plugin-dir/index.js    
npm notice 235B  test/fixtures/mock-plugin-dir/package.json
npm notice 121B  test/fixtures/mock-plugin.js              
npm notice 1.7kB test/index.js                             
npm notice 742B  test/logger.js                            
npm notice 2.0kB test/plugin.js                            
npm notice 649B  test/stub.js                              
npm notice 1.5kB test/transaction.js                       
npm notice 564B  test/vm_harness.js                        
npm notice === Tarball Details === 
npm notice name:          haraka-test-fixtures                    
npm notice version:       1.0.26                                  
npm notice package size:  12.1 kB                                 
npm notice unpacked size: 42.0 kB                                 
npm notice shasum:        2f17b42ff1ed9e38154af30f11e4983229f02ae5
npm notice integrity:     sha512-3D969Lixcufdm[...]7YZJu+hHNkmuA==
npm notice total files:   28                                      
npm notice 
+ haraka-test-fixtures@1.0.26