owenthereal/upterm 0.4.5

• Add comparision to prior arts

• Fix link typo

• Link Upterm blog post.

• Fix logging typo

• Check nil of admin server

  See https://github.com/jingweno/upterm/runs/1164049841

• Update Go to 1.15 in CI

• Update creack/pty

  Got "error starting command: unable to start pty: fork/exec /bin/bash:
  Setctty set but Ctty not valid in child".

  Ref: https://github.com/jingweno/upterm/runs/1171713607.

• Clean up Go 1.14

• Simplify admin client with grpc only

  Delete grpc gateway and swagger code

• Add opencollective funding page

• Add CONTRIBUTING.md template

• Update FUNDING.yml

• Remove funding links on README

• Terraform deployment to Digital Ocean

• Fix GH username

• Change GH username to owenthereal

• Remove unused make tasks

• Bump test timeout

• Remove generate task at compile time

  GH Action Mac image doens't have Docker:
  https://github.hscsec.cnmunity/t/why-is-docker-not-installed-on-macos/17017/4

• More GH username changes

• Release Upterm 0.4.5