Merge pull request #282 from hpcugent/v1.8.x

release EasyBuild v1.8.2
Merge pull request #312 from hpcugent/develop

release EasyBuild v1.9.0
added support for samtools 0.1.19
clean up version-dependent list of binaries in SAMtools easyblock
fix typo
fix comment, add missing bin file for v0.1.19
Merge pull request #320 from boegel/samtools-0.1.19-support

fix support for BAMtools 0.1.19