Update CHANGELOG.md

fix

Merge pull request cmderdev#2144 from daxgames/1.3.12

1.3.12 Release

Merge pull request cmderdev#1999 from daxgames/fix_ssh_agent_default

fix ssh-agent in user_profile.cmd.default

Merge pull request cmderdev#1971 from cmderdev/fix_1.3.9

fix initial launch of cmder starting with conemu default cfg

Merge pull request cmderdev#1948 from daxgames/fix_timer

fix timer error

Tagging as v1.3.7

Update CHANGELOG.md

Update Changelog Tag url after merge