Looks like the recent build of [90974ab] is failing at linking geanyvc unittests due to missing gtkspell lib:

[jobs/685847261](https://travis-ci.org/github/geany/geany-plugins/jobs/685847261#L7195)

``` ... CCLD unittests unittests-geanyvc.o: In function `vccommit_activated': /home/travis/build/geany/geany-plugins/_build/geany-plugins-1.37/_build/geanyvc/src/../../../geanyvc/src/geanyvc.c:1739: undefined reference to `gtkspell_new_attach' collect2: error: ld returned 1 exit status make[4]: *** [unittests] Error 1 make[4]: Leaving directory `/home/travis/build/geany/geany-plugins/_build/geany-plugins-1.37/_build/geanyvc/src' make[3]: *** [check-am] Error 2 make[3]: Leaving directory `/home/travis/build/geany/geany-plugins/_build/geany-plugins-1.37/_build/geanyvc/src' .... ```

Fix is submitted in PR.