3.3.1 (#529)

* makefile wip

* feat: adds Makefile

Adds a `Makefile` for managing build-related tasks.

* chore: updates dependencies

* chore: updates dependencies

* chore: updates bin scripts

- Removes `build_release.sh`
- Places deprecation notice in `build_devel.sh`, as its purpose has been
  superceded by the `Makefile`.

* chore: updates bin scripts

- Removes `build_release.sh`
- Places deprecation notice in `build_devel.sh`, as its purpose has been
  superceded by the `Makefile`.

* fix: Makefile

Makes several corrections and improvements to the `Makefile`:

- Previously, the `ifeq` rules were not behaving as intended, due to
  false assumptions regarding how `make` fundamentally behaves.
  Malfunctioning imperative-style programming has been replaced with
  declarative rules to repair this issue.

- Previously, all release executables were zipped after compilation. In
  order to spare non-Windows users from (possibly) needing to install a
  package to unzip the executables, all non-Windows binaries are now
  compressed with `gzip`. (Windows executables are still compressed with
  `zip`.)

- Removes a bit of needlessly verbosity in several rules and paths.

* chore: updates dependencies

* chore: bumps version to 3.3.1

vendor/modules.txt

@@ -43,15 +43,15 @@ github.com/dlclark/regexp2/syntax
 github.com/docopt/docopt-go
 # github.com/mattn/go-colorable v0.0.9
 github.com/mattn/go-colorable
-# github.com/mattn/go-isatty v0.0.11
+# github.com/mattn/go-isatty v0.0.12
 github.com/mattn/go-isatty
 # github.com/mgutz/ansi v0.0.0-20170206155736-9520e82c474b
 github.com/mgutz/ansi
 # github.com/mitchellh/go-homedir v1.1.0
 github.com/mitchellh/go-homedir
-# golang.org/x/sys v0.0.0-20191026070338-33540a1f6037
+# golang.org/x/sys v0.0.0-20200116001909-b77594299b42
 golang.org/x/sys/unix
 # gopkg.in/yaml.v1 v1.0.0-20140924161607-9f9df34309c0
 gopkg.in/yaml.v1
-# gopkg.in/yaml.v2 v2.2.7
+# gopkg.in/yaml.v2 v2.2.8
 gopkg.in/yaml.v2