Chopstx 1.20 / Chopstx 2.3

[NIIBE Yutaka]

Hello,

Chopstx 1.20 is released.

	tag release/1.20
	Tagger: NIIBE Yutaka <gniibe at fsij.org>
	Date:   Tue Oct 12 11:23:36 2021 +0900
	commit a6b96fe434db9fd525cbec0b1c02e910fa2bdb1e

This release is from STABLE-BRANCH-1 branch.


Chopstx 2.3 is released.

	tag release/2.3
	Tagger: NIIBE Yutaka <gniibe at fsij.org>
	Date:   Tue Oct 12 11:12:22 2021 +0900
	commit 9977bac71561482120dcdf3f2d948411112fd46b

This release is from master branch.


For both releases, changes are only for the USB driver of GNU/Linux
emulation.  I fixed the value of URB_DATA_SIZE, so that Gnuk can work
with PC/SC.
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