Updating cdproto dependency

Updating cdproto dependency which introduced some slight,
backwards-incompatible name changes of types.

fail tests if the first testAllocate fails

Otherwise we abruptly stop with a panic.

Fix concurrency issues

Intermittent timeouts on certain channel reads can occur, and not catch
when a context has been closed causing hangs and other potential issues.

This adds additional checks for when a context has been closed in a
first pass at fixing the fundamental issue.

Additionally, gets rid of the `raw{Marshal,Unmarshal}` calls, and
updates LICENSE.

General code cleanup

A bit of code reorganization, generating latest device profiles.

Updating dependencies

Update dependencies, fix issue with cdproto

Update dependencies to latest. Fixes issue with the missing
sendMessageToTarget command. Fixes chromedp#478.

Release 0.4.0

Release 0.3.1

Release v0.3.0

Release v0.2.0