remove workaround for tirex socket known bug

Tirex bug is reported and will be fixed soon
https://trac.openstreetmap.org/ticket/4869

Signed-off-by: Hiroshi Miura <miurahr@linux.com>
Add enqueue/dequeue/ping command

Signed-off-by: Hiroshi Miura <miurahr@linux.com>
Prepare for 0.20 release

Signed-off-by: Hiroshi Miura <miurahr@linux.com>
tirex: do nothing when request fails

Signed-off-by: Hiroshi Miura <miurahr@linux.com>
tirex: refactors

Signed-off-by: Hiroshi Miura <miurahr@linux.com>
Bundle tirex patch and document update

Signed-off-by: Hiroshi Miura <miurahr@linux.com>
Merge pull request #1 from miurahr/tirex-socket-fix

Tirex socket fix and performance imrovement.