Release v2.0.0

chore(release): 2.0.0-beta.5

chore(release): 2.0.0-beta.4

chore(release): 2.0.0-beta.3

build: bump version number to 2.0.0-beta.2

build: bump version number to beta

docs: Fix maintainer link

Use GROMACS potential type ids in itp file output

Merge branch 'dww100-tutorial_clarify'

Pull request fixing consistency in tutorial