Fix use of should_skip_build()

Closes #20

See merge request !34

No config set when using conda_build.api.build() directly from metadata

Closes bob.conda#68

See merge request !33

Update click versions as it was updated in bob-devel

See merge request !32

[build] Make exists_on_channel() and next_build_number() ignore hashes completely and recover the previous behaviour

Add new deployment module and applies DRY to scripts.ci (closes #18)

Closes #18

See merge request !31