[LyX/master] Add ChangeLog do document our own changes

[Juergen Spitzmueller]

commit 48a84370fef225031df33e1cddf4ea5a01ca12c3
Author: Juergen Spitzmueller <spitz at lyx.org>
Date:   Thu Apr 9 09:22:48 2020 +0200

    Add ChangeLog do document our own changes
---
 3rdparty/dtl/ChangeLog-LyX |   18 ++++++++++++++++++
 1 files changed, 18 insertions(+), 0 deletions(-)

diff --git a/3rdparty/dtl/ChangeLog-LyX b/3rdparty/dtl/ChangeLog-LyX
new file mode 100644
index 0000000..f6b1228
--- /dev/null
+++ b/3rdparty/dtl/ChangeLog-LyX
@@ -0,0 +1,18 @@
+This file documents changes that have been done on top of the released
+version 0.6.1 from https://ctan.org/pkg/dtl
+
+Version 0.6.2 -- 14 September 2005
+===================================
+
+2006-09-14 Enrico Forestieri <forenr at lyx.org>
+
+* dt2dv.c: Handle non-ASCII characters.
+
+2005-07-25 Angus Leeming <leeeming at lyx.org>
+
+* dt2dv.c: Enable to handle .dvi files containing strings longer than 1024 chars.
+
+* Makefile: enable the to work out of the box on both *nix and Windows machines
+  under the MinSYS environment.
+
+* man2ps: build fixes