Compatibility with react

Previous releases were using const enums. They are incompatible with the compiler option "isolatedModules" used by react.

This release:

• changes all const enum declarations to plain enum

• updates generated reflection information to numerical literal with a comment to keep code size small

• activates compiler option "isolatedModules" for the "test-generated" package to cover regressions

Thanks to @pedelman for bringing this issue up!

Bugfix for missing custom field options

This patch fixes issue #2

Automatic protoc installation

This release adds automatic installation of the protocol buffer compiler.

Installation is managed by the new package @protobuf-ts/protoc and is tested on macos, linux and windows.

Bugfix for MessageType.clone()

This patch fixes issue #1

First release

This is the first public release of protobuf-ts.