[BRLTTY] 5.6

[Mgr. Janusz Chmiel]

Oh, this bug is very probably not help us to fetch The cause of The problem.
I can not reproduce bug related to USB device unplug. So I have started 
to reproduce bug after using fast restart option on The tablet.
04-07 18:53:22.219   193   214 I BufferQueueProducer: [Application 
Error: 
org.a11y.brltty.android](this:0x7fa16c7800,id:520,api:1,p:784,c:193) 
queueBuffer: fps=0.06 dur=15689.50 max=15689.50 min=15689.50

I have fetched whole logcat, but it is big file, more than 700000 
characters. But one think is sure.
There is no assertion
I try to fetch more information. I will also focus on warning word.
Error, warning, debug.