New Stuff
 - Enable curl auto compression/decompression (#1437)
 - Supercharge `nvm debug` output (#1453)
 - Add missing commands in bash_completion (#1467)
 - `install.sh`: Parallel script download jobs (#1479)

Fixes
 - ensure MANPATH is not unbound (#1413)
 - checksums: remove libressl command support (#1417)
 - `install.sh`: NVM_PROFILE bash/zsh detection in installation, bash_completion fixes (#1375)
 - stop setting mirror env vars unnecessarily (#1429)
 - Install failed should return correct exit status (#1347, #1348)
 - `nvm install -s`: ensure additional params lack a trailing space
 - declare MANPATH if and only if it's not set (#1430)
 - [completions] Remove nospace in bash_completion (#1456)
 - `nvm install -s`: npm detection
 - `nvm_ensure_version_installed`: add `system` support (#1238)
 - confirm curl exists before detecting curl libz feature (#1487, #1497)

Documentation
 - Introduce doctoc for "Table of Contents" autogeneration (#1408)
 - Various fixes/improvements (#1420, #1427, #1431, #1448, #1452, #1461, #1169, #1464, #1465, #1478, #1485, #1491, #1490, #1500, #1511)
 - README.markdown → README.md (#1492)

Refactors
 - minor refactors (#1421, #1415, #1447, #1449, #1459, #1468, #1481, #1477, #1486)
 - Add `nvm_has_non_aliased` (#1443)

Performance
 - Improve sed/awk usage (#1442, #1441, #1438, #1480)

Tests
 - Add retry on urchin setup which has no built in retry feature (#1439)
 - testing improvements (#1454, #1455, #1424, #1466, #1473, #1494, #1498)
 - Move to Ubuntu 14.04 on Travis CI (#1458, #1470, #1474, #1475)
 - Re-enable WITHOUT_CURL tests (#1489)