- Fix download url

- Update to version 1.2.1
* INCR transfer bug fixes in #16
* Use XDG_CACHE_HOME for xsel.log in #15
* Using markdown syntax in #9
* Plug memory leak in handle_targets in #18
* Fix segfault when stdin is empty in #17
* Fix #19 segfault when --append to empty selection in #20
* Do not modify HOME environment variable in #21
* Perform fstat on stdin and stdout only if required in #22
* Debian patches in #25
* Avoid passing NULL to vsnprintf() in #27
* Avoid extra char copy in strncpy in #32
* Set timer value to 0 to stop timer, don't use a nullptr timer
in #31
* Remove interfering error message in #37
* Option: trim trailing newline from output in #39
* In README file: updated link to ICCCM rant to one that works
in #40
* Fix MULTIPLE conversion requests in #45
* Added option to add window name in #41
* Set WM_NAME and WM_CLASS window properties in #35
* Modernize in #50
- Remove disable-werror.patch because it was applied in code