Update changes.md

Release 1.1.7 changes.md update (#4184)

* Release 1.1.7 changes.md update

* Mention last 2 PRs merged

1.x: Release 1.1.6 CHANGES.md (#4008)

Release 1.1.5 CHANGES.md update (#3913)

Release 1.1.4 CHANGES.md (#3906)

Merge pull request #3846 from akarnokd/Release_1_1_3_changes

1.x: Release 1.1.3 CHANGES.md update

Merge pull request #3778 from akarnokd/Release1_1_2

1.x: Release 1.1.2 CHANGES.md update

Merge pull request #3695 from akarnokd/Release1_1_1

Release 1.1.1 changes.md

Merge pull request #3553 from stealthcode/changesmd-v1.1.0

Update CHANGES.md for v1.1.0

Merge pull request #3551 from stealthcode/changesmd-v1.0.17

Update CHANGES.md for v1.0.17