a less noisy Travis CI bot IRC notification
Merge pull request #3971 from Mailaender/silent-travis

Made Travis CI bot IRC notifications less noisy
Update README.md
Update .travis.yml

the channel does not allow notices from outside
Fix viewport-px / world-px confusion in ScreenMap. Fixes #3964.
Extract contrail fading for dead projectiles into an IEffect.
Use scale in RenderSimple.RenderPreview. Fixes #3970.
Re-enable travis notices without joining.

This reverts commit dbb38e3a426249e762d636bbadc232b329c5d970.
Introduce Keycode to simplify key checks.
Remove VirtKey and KeyName.
Merge pull request #3977 from pchote/travis-fix

Re-enable travis notices without joining.
Merge pull request #3976 from pchote/scale-fix

Use scale in RenderSimple.RenderPreview.
Merge pull request #3975 from pchote/contrail-fix

Extract contrail fading for dead projectiles into an IEffect.
Merge pull request #3974 from pchote/frozen-actor-fix

Fix bogus screen-map queries.
Add a Hotkey class for user-configurable keys. Fixes #3779.

Users can now define and use hotkeys that include modifiers (ctrl/meta/shift/alt).
Merge pull request #3969 from pchote/hotkeys

Improved hotkey support
Support bottom-aligned scroll panels.
Remove desyncing fp from WPos.LerpQuadratic. Fixes #3966.
Merge pull request #3984 from pchote/desync-fix

Remove desync from WPos.LerpQuadratic.
Update README.md

minor changes