+20190223
+ + fix typo in adds200 -TD
+ + add tic check for consistent alternate character set capabilities.
+ + improve check in mvcur() to decide whether to use hard-tabs, using
+ xt, tbc and hts as clues.
+ + replace check in reset command for obsolete "pt" capability using
+ tbc and hts capabilities as clues (report by Nicolas Marriott).
+
+20190216
+ + improve manual page description of TABSIZE.
+ + add test/demo_tabs program.
+
+20190209
+ + add check in tic to provide warnings for mismatched number of
+ parameters in the documented user-capability extensions.
+