Fix breakage in 0.7.2 with building functions

Changelog:

• Ensure that we name the copy dest correctly #523 Fixes #521

OPENFAAS_TEMPLATE_URL override and other minor fixes

Changelog:

• Override for template pull URL via ENV variable OPENFAAS_TEMPLATE_URL #515 by s8sg
• Adds support for additional HTTP verbs PATCH, OPTIONS and HEAD #505 by ewilde
• Fixes issue with faas-cli build for same folder #480 by viveksyngh
• Configurable handler directory #504 by dmcclory
• Proxy version command HTTP call #520 by viveksyngh

Security and proxy fix for invoke command

Changelog

• invoke verb was sending basic auth headers in error (fixed) #518
• invoke was not honouring https_proxy/http_proxy variables (fixed) #517
• invoke fix issue with header with parsing values with multiple = symbols #510

Adds "up" verb combining build/push/deploy!

Changelog:

• Add build folder to dockerfile when shrinkwrap #484 by @martindekov
• Move deploy function params into a specification #494 by @ewilde
• Add up alias for build, push, deploy #503 by @johnmccabe
• Add unit tests for generate command #493 by @viveksyngh

🎉 💯 🥇 #TeamServerless

Docker distribution change and annotations for store

Changelog:

• CLI now installed in /usr/bin in Docker image - 7b4e7c1
• Annotations for store - #500 #498 #501 @martindekov

Docker distribution change and annotations for store

Changelog:

• CLI now installed in /usr/bin in Docker image - 7b4e7c1
• Annotations for store - #500 #498 #501 @martindekov

Docker distribution change and annotations for store

Changelog:

• CLI now installed in /usr/bin in Docker image - 7b4e7c1
• Annotations for store - #500 #498 #501 @martindekov

Rename read-only fs option to readonly_root_filesystem

The YAML file option for specifying that a function should be read-only is now readonly_root_filesystem

Support extended --tag syntax, read-only fs and assorted fixes.

Changelog:

• Command store deploy still returns 0 when deploy failed
  #473 by martindekov

• Extend last PR to make store deploy return proper status code
  #476 by martindekov was merged 5 days ago

• Fix a possible race between wg.Add and wg.Wait new-contributor
  #470 by rosti

• Extend --tag=branch which tags image with branch and sha
  #465 by martindekov

• faas-cli store deploy - deploys wrong image with mismatched name
  #466 by alexellis

• Add ReadOnlyRootFilesystem to the schema
  #439 by LucasRoesler

• Add exit code 1 for functions that exit with status different than 200 or 202
  #445 by martindekov

Also closed #443 #401

Fixes for registry auth on Swarm with GitLab extended repos

Changelog

• Fixes for registry auth on Swarm with GitLab extended repos via #453 @johnmccabe