2022-12-16
	* v0.56: ocgx2.sty
	* fix: documentation

2022-08-04
	* v0.55: ocgx2.sty
	* v0.22: ocgbase.sty
	* fix: pkg option processing acc. to new LaTeX format 22-06-01

2022-04-01
	* v0.54: ocgx2.sty
	* v0.21: ocgbase.sty
	* new: expanding ocmd env arguments
	* fix: a few internal macros \protected

2021-06-16
	* v0.53: ocgx2.sty
	* fix: tikz option breaks package loading

2021-06-11
	* v0.52: ocgx2.sty
	* v0.20: ocgbase.sty
	* fix: incomplete \ifx when pdfmanagement-testphase was not enabled

2021-06-03
	* v0.51: ocgx2.sty
	* v0.19: ocgbase.sty
	* fix: pdfmanagement-testphase; ocgcolorlinks

2021-01-25
	* v0.50: ocgx2.sty
	* v0.18: ocgbase.sty

2020-06-11
	* v0.49: ocgx2.sty
	* fix: `ocgcolorlinks': fixing misplaced page content resulting from
	\pdfliteral{} inserted by others (such as TikZ)

2019-11-07
	* v0.48: ocgx2.sty
	* fix: link-making commands failed with empty option arg

2019-11-04
	* v0.47: ocgx2.sty
	* v0.17: ocgbase.sty
	* fix: output driver set-up

2019-10-01
	* v0.46: ocgx2.sty
	* fix: 2020 deprecations (fixocgx.sty)

2019-09-19
	* v0.45: ocgx2.sty
	* new: using comma for separating OCG ids in \showocg, \hideocg etc.; <space>
	still accepted for compatibility with ocgx/ocg-p

2019-09-17
	* v0.44: ocgx2.sty
	* fix: wrong visibility of reopened ocg (introduced in v0.41)

2019-07-04
	* v0.43: ocgx2.sty
	* v0.16: ocgbase.sty
	* fix: ocmd-related refactoring; now, \ocgbase@insert@oc takes into account
	open OCMD layers;
	* new: OCMD visibility expressions also accept references to other ocmd

2019-05-28
	* v0.42: ocgx2.sty
	* new: `ocmd' TikZ style added; option `radiobtngrp' renamed to
	`radiobtngrps' and accepting multiple RB group names passed as a
	comma-separated list (`radiobtngrp' still available as an alias)

2019-05-24
	* v0.41: ocgx2.sty
	* v0.15: ocgbase.sty
	* new: `ocmd' environment (PDF Optional content membership dictionary)
	* fix: passing driver options to expl3

2019-01-02
	* v0.40: ocgx2.sty
	* fix: merge request incorporated (latex3 end-of-2018 deprecations)

2018-10-01
	* v0.39: ocgx2.sty
	* fix: ocgcolorlinks: simpler and better link-colour-spill prevention

2018-09-27
	* v0.38: ocgx2.sty
	* fix: /ocglinkprotect{...} underfull box message and colour issue when
	nested

2018-09-25
	* v0.37: ocgx2.sty
	* new: /tikz/trigger ocg={...} for various mouse triggers

2018-06-27
	* v0.36: ocgx2.sty
	* fix: code of previous fix simplified

2018-06-26
	* v0.35: ocgx2.sty
	* fix: wrong link size of clickable paths in scaled `tikzpicture'

2018-06-07
	* v0.34: ocgx2.sty
	* v0.14: ocgbase.sty
	* fix: many cs now def'ed `protected'; adjustments after migration to GitLab

2018-04-06
	* v0.33: ocgx2.sty
	* v0.13: ocgbase.sty
	* fix: documentation section in ocgbase.sty

2017-09-29
	* v0.32: ocgx2.sty
	* v0.12: ocgbase.sty
	* fix: \ocglinkprotect improved

2017-09-19
	* v0.31: ocgx2.sty
	* fix: colour flooding caused by empty links with XeTeX driver and
	`ocgcolorlinks' option

2017-09-14
	* v0.30: ocgx2.sty
	* v0.11: ocgbase.sty
	* fix: link size (XeTeX driver) with `ocgcolorlinks' option set;
	OCG switching links in Evince viewer now working; correct listing of
	nested OCGs in layer tree (`Layers' navigation panel in the gui)

2017-06-08
	* v0.29: ocgx2.sty
	* fix: wrong box number in internal macro, ocgcolorlinks broken for dvips

2017-06-07
	* v0.28: ocgx2.sty
	* fix: hotfix from v0.27 replaced

2017-06-07
	* v0.27: ocgx2.sty
	* fix: hotfix to cope with a change of \hbox:n in expl3 [2017/05/13]

2017-05-12
	* v0.26: ocgx2.sty
	* fix: OCView, OCPrint (ocgcolorlinks related OCGs) settings saved for
	possible re-opening by the user

2017-04-25
	* v0.25: ocgx2.sty
	* new:OCG  switching links (\showocg, \hideocg etc.) with hyperref look
	& feel if hyperref is loaded (link border or colorlinks/ocgcolorlinks)

2017-03-30
	* v0.24: ocgx2.sty
	* fix: \ocglinkprotect{...} messing up the graphics state (CTM)

2017-03-30
	* v0.23: ocgx2.sty
	* v0.10: ocgbase.sty
	* fix: nested ocgcolorlinks over multiple pages

2017-03-26
	* v0.22: ocgx2.sty
	* fix: nested ocgcolorlinks

2017-03-23
	* v0.21: ocgx2.sty
	* v0.9: ocgbase.sty
	* fix: error when building document with nested OCGs
	* new: ocgcolorlinks extending over line and page breaks

2017-03-16
	* v0.20: ocgx2.sty
	* v0.8: ocgbase.sty
	* fix: compatibility with other pkgs (pdfbase, xsavebox, media9, animate)

2017-03-09
	* v0.19: ocgx2.sty
	* v0.7: ocgbase.sty
	* fix: minor code fixes

2017-03-07
	* v0.18: ocgx2.sty
	* fix: workaround for A-Reader bug when placing OCG switches on OCGs

2016-03-22
	* v0.17: ocgx2.sty
	* new: option `ocgcolorlinks', enables OCG colour links for hyperref package

2016-03-11
	* v0.16: ocgx2.sty
	* v0.6: ocgbase.sty
	* fix: minor adjustments

2016-01-29
	* v0.15: ocgx2.sty
	* fix: adjusted `atendvi'-related warning message

2015-12-07
	* v0.14: ocgx2.sty
	* v0.5: ocgbase.sty
	* fix: `0' and `1' could not be used for setting initial
	visibility; \actionsocg macro caused compilation error when used
	without optional argument

2015-12-03
	* v0.13: ocgx2.sty
	* fix: bug occasionally creating wrong OCG listing in the layers
	tab of the pdf viewer in connection with nested OCGs
	* new: parameter `opts' added to TikZ style `ocg'

2015-11-26
	* v0.12: ocgx2.sty
	* v0.4: ocgbase.sty
	* fix: last argument of `ocg' environment (initial visibility)
	had no effect when re-opening an OCG

2015-11-23
	* v0.11: ocgx2.sty
	* v0.3: ocgbase.sty
	* new: PDF layers spanning multiple pages

2015-11-02
	* v0.10: ocgx2.sty
	* v0.2: ocgbase.sty
	* new: commands \ocgbase@oc@bdc, \ocgbase_oc_bdc:n and \ocgbase@oc@emc,
	\ocgbase_oc_emc: for marking optional content in content streams

2015-10-28
	* v0.9: ocgx2.sty
	* v0.1: ocgbase.sty
	* new: Environment option `radiobtngrp' (adding layers to Radio Button
	Groups), option `showingui' as a synonym for `listintoolbar';
	code restructured for better maintenance (new file ocgbase.sty)

2015-09-11
	* v0.8
	* fix: missing option processing for ocg-p command replacements
	  (\toggleocgs, \showocgs etc.)

2015-07-20
	* v0.7
	* fix: expl3-related adjustments

2015-06-19
	* v0.6a
	* fix: typos fixed

2015-06-18
	* v0.6
	* new: package renamed to `ocgx2'; no more dependency on ocgx and ocg-p
	packages
	* new: options `viewocg', `printocg', `exportocg', `listintoolbar' also
	available as package options
	* new: package-only option `tikz' enables P. Gaborit's `ocgx' TikZ library

2015-06-15
	* v0.5
	* Fix: OCG ID lists with leading/trailings spaces passed as
	argument to the OCG visibilty setting commands caused an error; the same
	with empty arguments.
	Improved behaviour of visibilty setting links that are themselves
	part of OCGs.

2015-03-16
	* v0.4
	* Fix: no more PS specials from `ocg-p.sty' in dvipdfmx mode

2015-03-11
	* v0.3
	* New: ocg environment option `viewocg=always|never|ifvisible' added;
	macro \fxocg@insert@OC allows package authors to insert
	/OC <<OCMD with currently open OCGs>> entries into (suitable) pdf objects,
	i. e. XObjects & Annotations, to make them PDF-layer aware.
	* Fix: dead tikz-generated ocg buttons (from tikzlibraryocgx.code.tex) with
	dvipdfmx/xelatex

2015-01-26
	* v0.2
	* Fix: It was not possible to reference an OCG before defining it.

2015-01-23
	* v0.1
	* New: initial release as `fixocgx'
