API changes, most recent first:
+2019-09-01 - xxxxxxxxxx - lavu 56.34.100 - pixfmt.h
+ Add EBU Tech. 3213-E AVColorPrimaries value
+
+2019-08-xx - xxxxxxxxxx - lavf 58.31.101 - avio.h
+ 4K limit removed from avio_printf.
+
+2019-08-xx - xxxxxxxxxx - lavf 58.31.100 - avio.h
+ Add avio_print_string_array and avio_print.
+
+2019-07-27 - xxxxxxxxxx - lavu 56.33.100 - tx.h
+ Add AV_TX_DOUBLE_FFT and AV_TX_DOUBLE_MDCT
+
-------- 8< --------- FFmpeg 4.2 was cut here -------- 8< ---------
2019-06-21 - a30e44098a - lavu 56.30.100 - frame.h