[maven-release-plugin] prepare release Singularity-0.4.5

[maven-release-plugin] prepare release Singularity-0.4.4

Merge pull request HubSpot#698 from HubSpot/logfetch_date_fixes

Logfetch date fixes

revert requests version to 2.5 for logfetch

Merge pull request HubSpot#667 from HubSpot/logfetch_cache

add logsearch and use-cache option for live logs

Merge pull request HubSpot#660 from HubSpot/logfetch_upgrade

Logfetch upgrade

[maven-release-plugin] prepare release Singularity-0.4.3

[maven-release-plugin] copy for tag Singularity-0.4.2

Merge pull request HubSpot#580 from HubSpot/logfetch_headers

allow addition of custom headers on logfetch requests

fix logfetch help