JSON name for hero position is "pos"
Last row is missing on the tileset
Merge pull request #1 from cashlo/pullrequest

JSON name for hero position is "pos"
More user-friendly handling of 4xx and 5xx errors
Merge pull request #2 from uzzz/master

More user-friendly handling of 4xx and 5xx errors
Merge remote-tracking branch 'upstream/master'