1.2.0

🚀 New feature

• Add PopularimeterFrame #58 (thanks @dhulihan for implementation)

🐛 Bug fixes

• Fix race conditions in unknown frame #59 (thanks @astax-t)

🏃‍♀️ Performance

• Improve performance for ISO encoding #61

   name                   old time/op    new time/op    delta
   WriteISO-4               21.7µs ± 1%     9.3µs ± 1%  -57.01%  (p=0.001 n=7+7)
   
   name                   old alloc/op   new alloc/op   delta
   WriteISO-4               47.2kB ± 0%     5.2kB ± 0%  -88.93%  (p=0.001 n=7+7)
   
   name                   old allocs/op  new allocs/op  delta
   WriteISO-4                 71.0 ± 0%      41.0 ± 0%  -42.25%  (p=0.001 n=7+7)