Merge pull request #6 from reactome/release/1.2.1

Update pom; add CHANGELOG

Merge pull request #121 from reactome/feature/release-common-lib-refa…

…ctoring

Feature/release common lib refactoring

Merge pull request #82 from reactome/feature/update-release-common-li…

…b-pom

Feature/update release common lib pom

Merge pull request #10 from reactome/feature/ChEBI_Update

Feature/ch ebi update

Merge branch 'release/1.0.0'