Merge pull request xtermjs#2179 from Tyriar/release/3.14_2174

Fix NPE in open

v3.14.1

Merge pull request xtermjs#2145 from xtermjs/Tyriar-patch-1

v3.14.0

v3.13.2

v3.13.1

Merge pull request xtermjs#2055 from xtermjs/Tyriar-patch-2

v3.13.0

v3.12.2

Merge pull request xtermjs#2011 from xtermjs/Tyriar-patch-1

v3.12.1

v3.12.0

Merge pull request xtermjs#1924 from xtermjs/Tyriar-patch-1

v3.11.0