feat(*): change TypeScript version range to >=3.2.1 <3.5.0

[JamesHenry]

TypeScript version added by this PR: 3.4.x

• I have updated the devDependency range in the root package.json
• I have updated the range value in packages/typescript-estree/src/parser.ts
• I have run the existing tests to make sure they still pass, or made any required updates
• I have added new tests for the features introduced in this newer version of TypeScript
• New feature tests added:
  • const assertions
  • readonly array alternate syntax
  • readonly tuples

[codecov]

Codecov Report

Merging #399 into master will not change coverage.
The diff coverage is 100%.

@@          Coverage Diff           @@
##           master    #399   +/-   ##
======================================
  Coverage    97.2%   97.2%           
======================================
  Files          68      68           
  Lines        2507    2507           
  Branches      388     388           
======================================
  Hits         2437    2437           
  Misses         44      44           
  Partials       26      26

Impacted Files	Coverage Δ
packages/typescript-estree/src/node-utils.ts	98.63% <ø> (ø)	⬆️
packages/eslint-plugin/src/util/createRule.ts	100% <ø> (ø)	⬆️
packages/typescript-estree/src/parser.ts	93.06% <100%> (ø)	⬆️