Bump version and fix version in specs.

shard.yml

@@ -1,6 +1,6 @@
 name: mint
 
-version: 0.20.0-alpha.3
+version: 0.20.0-rc.1
 license: BSD-3-Clause
 crystal: ~> 1.7
 

spec/mint_json/mint_version_mismatch

@@ -12,7 +12,7 @@ I was looking for
 
 but found instead:
 
-  0.20.0-alpha.3
+  99.99.99
 
 It is here:
 

spec/spec_helper.cr

@@ -6,6 +6,12 @@ MINT_ENV["TEST"] = "TRUE"
 require "./spec_helpers"
 require "../src/all"
 
+module Mint
+  def self.version
+    "99.99.99"
+  end
+end
+
 # Mock things
 class Mint::Installer::Repository
   @terminal = Render::Terminal.new

spec_cli/version_spec.cr

@@ -2,7 +2,7 @@ require "./spec_helper"
 
 context "Version" do
   it "prints the version" do
-    expect_output ["version"], "Mint #{Mint::VERSION}"
+    expect_output ["version"], "Mint #{Mint.version}"
   end
 
   it "prints the help" do

src/commands/version.cr

@@ -6,7 +6,7 @@ module Mint
       define_help description: "Shows version."
 
       def run
-        terminal.puts "Mint #{Mint::VERSION}"
+        terminal.puts "Mint #{Mint.version}"
       end
     end
   end

src/mint_json/mint_version.cr

@@ -34,7 +34,7 @@ module Mint
         end unless constraint
 
         resolved =
-          Installer::Semver.parse(VERSION.rchop("-devel"))
+          Installer::Semver.parse(Mint.version.rchop("-devel"))
 
         error! :mint_version_mismatch do
           block do
@@ -44,7 +44,7 @@ module Mint
           end
 
           snippet "I was looking for", constraint.to_s
-          snippet "but found instead:", VERSION
+          snippet "but found instead:", Mint.version
 
           snippet "It is here:", snippet_data(location)
         end unless resolved < constraint.upper && resolved >= constraint.lower

src/version.cr

@@ -1,3 +1,5 @@
 module Mint
-  VERSION = {{ `shards version "#{__DIR__}"`.chomp.stringify }}
+  def self.version
+    {{ `shards version "#{__DIR__}"`.chomp.stringify }}
+  end
 end