release 2.21.0

release 2.20.2

release 2.20.1

to release 2.20.0

to release 2.19.0

Merge pull request #218 from Geodan/release_2_18_1

release 2.18.1

Merge pull request #215 from Geodan/add_tileset_version

add tileset version option, release 2.18

Merge pull request #212 from Geodan/release_2_17

release 2.17

Merge pull request #207 from Geodan/release_2_16_0

release 2.16.0

Merge pull request #198 from Geodan/release_2_15_1

release 2.15.1