- Update to TypeScript 3.1.6 (#1177)
- Fixes Headers type not available. (#1175)
- Reader/Writer to use Uint8Array not ArrayBufferView (#1171)
- Fixes importing modules starting with 'http'. (#1167)
- build: Use target/ instead of out/ (#1153)
- Support repl multiline input (#1165)

Without HTTPS it might be possible for a MITM to inject arbitrary code into the "thumb.ts" response which Deno would then execute.

Because many Reader/Writer implementations (e.g. bufio) assume their
able to use subarray() with byte indexes and often ask for byte values,
it makes sense to simply restrict all implementations to Uint8Array.

Fixes #1104

This avoids the problem that when one of the caches is restored and the
other isn't, Rust doesn't get reinstalled, but it also isn't usable,
crashing the CI.

It was doing two independent things:
- print help and exit
- set log level

It's better to do those explicitly in main.rs

- Performance and stability improvements on all platforms.
- Add repl (#998)
- Add deno.Buffer (#1121)
- Support cargo check (#1128)
- Upgrade Rust crates and Flatbuffers. (#1145, #1127)
- Add helper to turn deno.Reader into async iterator (#1130)
- Add ability to load JSON as modules (#1065)
- Add deno.resources() (#1119)
- Add application/x-typescript mime type support (#1111)

Pro:
time ./out/debug/deno tests/error_001.ts  3.0s -> 0.4s

Con:
time ./tool/build.py snapshot              33s -> 1m52s
out/debug/gen/snapshot_deno.bin            39M -> 121M

- Running repl from js side.
- Add tests for repl behavior.
- Handle ctrl-C and ctrl-D.

Do not confuse this with Node's Buffer. This is a direct port of Go's
bytes.Buffer - it allows buffering of Reader and Writer objects.

Run with: cargo clippy
https://github.com/rust-lang-nursery/rust-clippy

And some other minor clean-ups in the same file.

Currently, the Travis chart displays "time" as the y-label of the graph, when in fact the unit is in minutes. (makes this consistent with other y-labels being "seconds")

Plus some minor improvements and clean-ups:

* Resolve DENO_BUILD_PATH to an absolute path if necessary.
* Rename DENO_BUILD_PATH to GN_OUT_DIR in places where it is supposed to
  be set by the build system (and not a user configuration variable).
* Output Cargo `rerun-if-*-changed` instructions first, so even if the
  build itself fails, configuration changes will still trigger a re-run
  of build.rs.
* Remove TODOs that are impossible.
* Re-run build.rs when the flatbuffer definition file changes.

- Based on code from @qti3e and @piscisaureus in #724 and #1125
  respectively.
- TODO The DENO_BUILD_PATH env var must be supplied and must be an
  absolute path, this restriction should be removed in future work.