Diff of AVM2/format

• The added line is THIS COLOR.
• The deleted line is THIS COLOR.
• Go to AVM2/format.

- 4.2 abcFile
-- https://learn.adobe.com/wiki/display/AVM2/4.2+abcFile
--  http://wiki.libspark.org/wiki/AVM2/Overview#a4.2abcFile 和訳

* u30 [#ve854bb9]

- https://ja.osdn.net/projects/happyabc/scm/git/happyabc/blobs/master/swflib/bytesOutTest.ml
     (fun () ->
        ok [0]    [u30 0];
        ok [0x7F] [u30 0x7F]);
       "2byte" >::
     (fun () ->
        ok [0xFF;0x30] [u30 0x187F];
        ok [0xFF;0x01] [u30 0xFF];
        ok [0xFF;0x7F] [u30 0x3FFF]);
       "3byte/15-21bit" >::
     (fun () ->
        ok [0xFF;0xFF;0x01] [u30 0x7FFF];
        ok [0xFF;0xFF;0x7F] [u30 0x1F_FFFF]);
       "4 byte/22-28bit" >::
     (fun () ->
        ok [0xFF;0xFF;0xFF;0x01] [u30 0x003F_FFFF];
        ok [0xFF;0xFF;0xFF;0x7F] [u30 0x0FFF_FFFF]);
       "5 byte/29-35bit" >::
     (fun () ->
        ok [0xFF;0xFF;0xFF;0xFF;0x01] [u30 0x1FFF_FFFF];
        ok [0xFF;0xFF;0xFF;0xFF;0x3]  [u30 0x3FFF_FFFF])];