Bump version to Release Candidate 1

[AstraLuma]

No major bugs have cropped up, just some optional lapses in functionality.

[nicoonoclaste]

@astronouth7303 Can we merge #176 first? It addresses the last bit of feedback that was given on #23.

PS: Are the “optional lapses in functionality” documented somewhere? I assume this isn't addressed yet, since the only changes since 1.0b1 is my documentation PR (#173).

[AstraLuma]

Things like #168, #171, and #174. These are improvements and expansions to the API that aren't part of any MVP or other functionality goals, and don't affect existing functionality. In other words, they're perfect for inclusion in a minor release.

[nicoonoclaste]

@astronouth7303 Ah, yes.

[nicoonoclaste]

bors r+

@astronouth7303 I'm about to go have lunch; I can deal with the release when I come back, if you don't get to it first.

[bors]

Build succeeded

• macOS PYTHON:3.6.8
• FreeBSD PYTHON:3.7
• Linux python:3.6-slim
• Windows python:3.6-windowsservercore-1809
• docs
• Windows python:3.7-windowsservercore-1809
• macOS PYTHON:3.7.2
• lint
• Linux python:3.7-slim
• FreeBSD PYTHON:3.6