Add TS 4.2

Now available as typescript@next now that 4.1 is available as typescript@rc.

Fix perf bot timeouts, deleting old versions of DT packages

• #146
• #147

More dependency fixes from @jablko

Dependency tracking understands import types. Previously it only worked with top-level import/export statements.

More dependency fixes from @jablko

• #96 - Allow scoped path mappings to use wildcards

Fix package deprecation

Deprecated packages weren't pointing to their source library, but their Definitely Typed name. This is the same over 90% of the time, but is occasionally incorrect.

Fixes from @jablko

v0.0.54

v0.0.54

Use yargs in @definitelytyped/perf

#111

Deprecate Typescript 3.1

v0.0.52

v0.0.52

Fix dtslint-runner with --localTypeScriptPath

Merge pull request #110 from microsoft/rbuckton-patch-1

Remove default for 'onlyTestTsNext' as well.

Fix dtslint-runner with --clone

#109