Support rc tags in build version

The code from the refactor that I have been working on is
now more or less ready to be merged. These changes make some
breaking changes, notably with regards to the plugin
interface. Once a lot more documentation has been written, I
will release this code as micro 2.0. There are a lot of new
features, and in the coming days I will try to go through
the open issues to see exactly which ones are addressed by
the new features, and write lots more documentation
regarding what has been implemented.

Some highlights include:

* Simple autocompletion.
    * Autocompletion (tab by default) will do a simple
      "buffer completion" which will autocomplete according
      to words used elsewhere in the buffer. In the future
      plugin support could be added along with support for
      interfacing with language-specific autocompletion
      tools.
* Automatic backups.
    * Backup files are stored in `~/.config/micro/backups`
      for every open buffer and are saved roughly every 8
      seconds if the buffer is being modified. Backups
      are removed when the buffer is closed, but if micro
      or the system crashes, any unsaved changes can be
      recovered by re-opening the file (micro will auto-
      recover) or by manually viewing the backup in the
      `~/.config/micro/backups` directory.
* Configurable statusline.
* Configurable linter plugin.
* Resizeable splits.
* Complete re-organization of the code to support better go
  modules and maintain a better directory structure.
* Better plugin interface with better access to the Go
  standard library and internal Micro functions (lots of
  documentation still needs to be written).
    * Documentation still needs to be written, but in the
      meantime please see the default plugins as examples
      as they have been converted from their old versions
      to be compatible with the new interface.
* Buffer synchronization when the same file is opened
  multiple times.
* Keybindings and mouse support in the command bar.
* Support for non-utf8 encodings.
* General QoL improvements and bug fixes.
    * Notably I believe the autoclose plugin crash issue is
      fixed.
* No more plugin manager.
    * Plugin installation will now be performed manually
      by git cloning into the `~/.config/micro/plug`
      directory. This may not be a highlight for some but
      I believe it is much simpler, and there is no need
      to have a heavyweight dependency manager. Perhaps
      in the future, a good command-line tool can be made
      to manage plugins if people would find it useful.
* Other features that I have forgotten.

Next I plan to write up more documentation for all the new
features, and make a "release candidate" for micro 2.0. I
will also be working to fix any bugs that come up (hopefully
not too many, but this is a big change and bound to have
some issues). After release I hope to focus more on
optimization (for example loading syntax files is currently
somewhat inefficient, and the bottleneck for startup time #1427).

Sorry for not being so active recently, but I hope merging
this big change can help me get back to more regular
development. Thanks to everyone for using micro and for
giving feedback and engaging with development online (even
if I don't always respond).

Merry Christmas!

Issues that are fixed/affected by this change:

Ref #1419 (configurable statusline)
Ref #1413 (cursor behaves better)
Ref #1401 (softwrap problems)
Ref #1383 (better save with sudo)
Ref #1424 (better save with sudo)
Ref #1382 (go modules)
Ref #1381 (install plugins from command line)
Ref #1357 (sorting -- textfilter)
Ref #1351 (custom linting)
Ref #1350 (sudo problem might be fixed)
Ref #1298 (readonly option)
Ref #1250 (autoclose bug)
Ref #1239 (go modules)
Ref #813  (autoclose bug)
Ref #812  (cursor sync across same buffers)
Ref #770  (resizeable panes)
Ref #635  (keybindings in infobar)
Ref #596  (disable builtin plugins)
Ref #550  (backups)
Ref #174  (autocompletion)

go.mod

@@ -2,24 +2,16 @@ module github.com/zyedidia/micro
 
 require (
 	github.com/blang/semver v3.5.1+incompatible
-	github.com/davecgh/go-spew v1.1.1 // indirect
 	github.com/dustin/go-humanize v1.0.0
 	github.com/flynn/json5 v0.0.0-20160717195620-7620272ed633
 	github.com/gdamore/encoding v1.0.0 // indirect
 	github.com/go-errors/errors v1.0.1
-	github.com/gopherjs/gopherjs v0.0.0-20181103185306-d547d1d9531e // indirect
-	github.com/jtolds/gls v4.2.1+incompatible // indirect
-	github.com/kr/pretty v0.1.0 // indirect
-	github.com/kylelemons/godebug v0.0.0-20170820004349-d65d576e9348 // indirect
-	github.com/lucasb-eyer/go-colorful v0.0.0-20181028223441-12d3b2882a08 // indirect
+	github.com/lucasb-eyer/go-colorful v1.0.3 // indirect
 	github.com/mattn/go-isatty v0.0.4
 	github.com/mattn/go-runewidth v0.0.4
 	github.com/mitchellh/go-homedir v1.1.0
 	github.com/npat-efault/poller v2.0.0+incompatible // indirect
-	github.com/robertkrimen/otto v0.0.0-20180617131154-15f95af6e78d // indirect
 	github.com/sergi/go-diff v1.0.0
-	github.com/smartystreets/assertions v0.0.0-20190116191733-b6c0e53d7304 // indirect
-	github.com/smartystreets/goconvey v0.0.0-20181108003508-044398e4856c // indirect
 	github.com/stretchr/testify v1.3.0
 	github.com/yuin/gopher-lua v0.0.0-20190125051437-7b9317363aa9
 	github.com/zyedidia/clipboard v0.0.0-20180718195219-bd31d747117d
@@ -28,11 +20,7 @@ require (
 	github.com/zyedidia/pty v1.1.2-0.20180126010845-30364665a244 // indirect
 	github.com/zyedidia/tcell v0.0.0-20191219170756-59b50b23fa9b
 	github.com/zyedidia/terminal v0.0.0-20180726154117-533c623e2415
-	golang.org/x/sys v0.0.0-20180903190138-2b024373dcd9 // indirect
 	golang.org/x/text v0.3.0
-	gopkg.in/DATA-DOG/go-sqlmock.v1 v1.3.0 // indirect
-	gopkg.in/check.v1 v1.0.0-20180628173108-788fd7840127 // indirect
-	gopkg.in/sourcemap.v1 v1.0.5 // indirect
 	gopkg.in/yaml.v2 v2.2.2
 	layeh.com/gopher-luar v1.0.4
 )

go.sum

@@ -2,8 +2,6 @@ github.com/blang/semver v3.5.1+incompatible h1:cQNTCjp13qL8KC3Nbxr/y2Bqb63oX6wdn
 github.com/blang/semver v3.5.1+incompatible/go.mod h1:kRBLl5iJ+tD4TcOOxsy/0fnwebNt5EWlYSAyrTnjyyk=
 github.com/chzyer/readline v0.0.0-20180603132655-2972be24d48e/go.mod h1:nSuG5e5PlCu98SY8svDHJxuZscDgtXS6KTTbou5AhLI=
 github.com/davecgh/go-spew v1.1.0/go.mod h1:J7Y8YcW2NihsgmVo/mv3lAwl/skON4iLHjSsI+c5H38=
-github.com/davecgh/go-spew v1.1.1 h1:vj9j/u1bqnvCEfJOwUhtlOARqs3+rkHYY13jYWTU97c=
-github.com/davecgh/go-spew v1.1.1/go.mod h1:J7Y8YcW2NihsgmVo/mv3lAwl/skON4iLHjSsI+c5H38=
 github.com/dustin/go-humanize v1.0.0 h1:VSnTsYCnlFHaM2/igO1h6X3HA71jcobQuxemgkq4zYo=
 github.com/dustin/go-humanize v1.0.0/go.mod h1:HtrtbFcZ19U5GC7JDqmcUSB87Iq5E25KnS6fMYU6eOk=
 github.com/flynn/json5 v0.0.0-20160717195620-7620272ed633 h1:xJMmr4GMYIbALX5edyoDIOQpc2bOQTeJiWMeCl9lX/8=
@@ -12,39 +10,19 @@ github.com/gdamore/encoding v1.0.0 h1:+7OoQ1Bc6eTm5niUzBa0Ctsh6JbMW6Ra+YNuAtDBdk
 github.com/gdamore/encoding v1.0.0/go.mod h1:alR0ol34c49FCSBLjhosxzcPHQbf2trDkoo5dl+VrEg=
 github.com/go-errors/errors v1.0.1 h1:LUHzmkK3GUKUrL/1gfBUxAHzcev3apQlezX/+O7ma6w=
 github.com/go-errors/errors v1.0.1/go.mod h1:f4zRHt4oKfwPJE5k8C9vpYG+aDHdBFUsgrm6/TyX73Q=
-github.com/gopherjs/gopherjs v0.0.0-20181103185306-d547d1d9531e h1:JKmoR8x90Iww1ks85zJ1lfDGgIiMDuIptTOhJq+zKyg=
-github.com/gopherjs/gopherjs v0.0.0-20181103185306-d547d1d9531e/go.mod h1:wJfORRmW1u3UXTncJ5qlYoELFm8eSnnEO6hX4iZ3EWY=
-github.com/jtolds/gls v4.2.1+incompatible h1:fSuqC+Gmlu6l/ZYAoZzx2pyucC8Xza35fpRVWLVmUEE=
-github.com/jtolds/gls v4.2.1+incompatible/go.mod h1:QJZ7F/aHp+rZTRtaJ1ow/lLfFfVYBRgL+9YlvaHOwJU=
-github.com/kr/pretty v0.1.0 h1:L/CwN0zerZDmRFUapSPitk6f+Q3+0za1rQkzVuMiMFI=
-github.com/kr/pretty v0.1.0/go.mod h1:dAy3ld7l9f0ibDNOQOHHMYYIIbhfbHSm3C4ZsoJORNo=
-github.com/kr/pty v1.1.1/go.mod h1:pFQYn66WHrOpPYNljwOMqo10TkYh1fy3cYio2l3bCsQ=
-github.com/kr/text v0.1.0 h1:45sCR5RtlFHMR4UwH9sdQ5TC8v0qDQCHnXt+kaKSTVE=
-github.com/kr/text v0.1.0/go.mod h1:4Jbv+DJW3UT/LiOwJeYQe1efqtUx/iVham/4vfdArNI=
-github.com/kylelemons/godebug v0.0.0-20170820004349-d65d576e9348 h1:MtvEpTB6LX3vkb4ax0b5D2DHbNAUsen0Gx5wZoq3lV4=
-github.com/kylelemons/godebug v0.0.0-20170820004349-d65d576e9348/go.mod h1:B69LEHPfb2qLo0BaaOLcbitczOKLWTsrBG9LczfCD4k=
-github.com/lucasb-eyer/go-colorful v0.0.0-20181028223441-12d3b2882a08 h1:5MnxBC15uMxFv5FY/J/8vzyaBiArCOkMdFT9Jsw78iY=
-github.com/lucasb-eyer/go-colorful v0.0.0-20181028223441-12d3b2882a08/go.mod h1:NXg0ArsFk0Y01623LgUqoqcouGDB+PwCCQlrwrG6xJ4=
+github.com/lucasb-eyer/go-colorful v1.0.3 h1:QIbQXiugsb+q10B+MI+7DI1oQLdmnep86tWFlaaUAac=
+github.com/lucasb-eyer/go-colorful v1.0.3/go.mod h1:R4dSotOR9KMtayYi1e77YzuveK+i7ruzyGqttikkLy0=
 github.com/mattn/go-isatty v0.0.4 h1:bnP0vzxcAdeI1zdubAl5PjU6zsERjGZb7raWodagDYs=
 github.com/mattn/go-isatty v0.0.4/go.mod h1:M+lRXTBqGeGNdLjl/ufCoiOlB5xdOkqRJdNxMWT7Zi4=
 github.com/mattn/go-runewidth v0.0.4 h1:2BvfKmzob6Bmd4YsL0zygOqfdFnK7GR4QL06Do4/p7Y=
 github.com/mattn/go-runewidth v0.0.4/go.mod h1:LwmH8dsx7+W8Uxz3IHJYH5QSwggIsqBzpuz5H//U1FU=
 github.com/mitchellh/go-homedir v1.1.0 h1:lukF9ziXFxDFPkA1vsr5zpc1XuPDn/wFntq5mG+4E0Y=
 github.com/mitchellh/go-homedir v1.1.0/go.mod h1:SfyaCUpYCn1Vlf4IUYiD9fPX4A5wJrkLzIz1N1q0pr0=
-github.com/npat-efault/poller v2.0.0+incompatible h1:jtTdXWKgN5kDK41ts8hoY1rvTEi0K08MTB8/bRO9MqE=
 github.com/npat-efault/poller v2.0.0+incompatible/go.mod h1:lni01B89P8PtVpwlAhdhK1niN5rPkDGGpGGgBJzpSgo=
-github.com/pmezard/go-difflib v1.0.0 h1:4DBwDE0NGyQoBHbLQYPwSUPoCMWR5BEzIk/f1lZbAQM=
 github.com/pmezard/go-difflib v1.0.0/go.mod h1:iKH77koFhYxTK1pcRnkKkqfTogsbg7gZNVY4sRDYZ/4=
-github.com/robertkrimen/otto v0.0.0-20180617131154-15f95af6e78d h1:1VUlQbCfkoSGv7qP7Y+ro3ap1P1pPZxgdGVqiTVy5C4=
-github.com/robertkrimen/otto v0.0.0-20180617131154-15f95af6e78d/go.mod h1:xvqspoSXJTIpemEonrMDFq6XzwHYYgToXWj5eRX1OtY=
 github.com/sergi/go-diff v1.0.0 h1:Kpca3qRNrduNnOQeazBd0ysaKrUJiIuISHxogkT9RPQ=
 github.com/sergi/go-diff v1.0.0/go.mod h1:0CfEIISq7TuYL3j771MWULgwwjU+GofnZX9QAmXWZgo=
-github.com/smartystreets/assertions v0.0.0-20190116191733-b6c0e53d7304 h1:Jpy1PXuP99tXNrhbq2BaPz9B+jNAvH1JPQQpG/9GCXY=
-github.com/smartystreets/assertions v0.0.0-20190116191733-b6c0e53d7304/go.mod h1:OnSkiWE9lh6wB0YB77sQom3nweQdgAjqCqsofrRNTgc=
-github.com/smartystreets/goconvey v0.0.0-20181108003508-044398e4856c h1:Ho+uVpkel/udgjbwB5Lktg9BtvJSh2DT0Hi6LPSyI2w=
-github.com/smartystreets/goconvey v0.0.0-20181108003508-044398e4856c/go.mod h1:XDJAKZRPZ1CvBcN2aX5YOUTYGHki24fSF0Iv48Ibg0s=
 github.com/stretchr/objx v0.1.0/go.mod h1:HFkY916IF+rwdDfMAkV7OtwuqBVzrE8GR6GFx+wExME=
-github.com/stretchr/testify v1.3.0 h1:TivCn/peBQ7UY8ooIcPgZFpTNSz0Q2U6UrFlUfqbe0Q=
 github.com/stretchr/testify v1.3.0/go.mod h1:M5WIy9Dh21IEIfnGCwXGc5bZfKNJtfHm1UVUgZn+9EI=
 github.com/yuin/gopher-lua v0.0.0-20190125051437-7b9317363aa9 h1:Wy3fAQLBPP0JSWdq3kBnmbFgXDHcyhtPpd+8kENV7mU=
 github.com/yuin/gopher-lua v0.0.0-20190125051437-7b9317363aa9/go.mod h1:fFiAh+CowNFr0NK5VASokuwKwkbacRmHsVA7Yb1Tqac=
@@ -52,27 +30,16 @@ github.com/zyedidia/clipboard v0.0.0-20180718195219-bd31d747117d h1:Lhqt2eo+rgM8
 github.com/zyedidia/clipboard v0.0.0-20180718195219-bd31d747117d/go.mod h1:WDk3p8GiZV9+xFWlSo8qreeoLhW6Ik692rqXk+cNeRY=
 github.com/zyedidia/glob v0.0.0-20170209203856-dd4023a66dc3 h1:oMHjjTLfGXVuyOQBYj5/td9WC0mw4g1xDBPovIqmHew=
 github.com/zyedidia/glob v0.0.0-20170209203856-dd4023a66dc3/go.mod h1:YKbIYP//Eln8eDgAJGI3IDvR3s4Tv9Z9TGIOumiyQ5c=
-github.com/zyedidia/poller v2.0.0+incompatible h1:DMOvB0EXz2JTokqOKfxPWN/8xXFJbO+m4vNhMkOY7Lo=
 github.com/zyedidia/poller v2.0.0+incompatible/go.mod h1:vZXJOHGDcuK08GXhF6IAY0ZFd2WcgOR5DOTp84Uk5eE=
 github.com/zyedidia/pty v1.1.2-0.20180126010845-30364665a244 h1:DZ7mZvUV5+oXeXV1E1t6ZIXRihHYyqYVIOSA+RGo88A=
 github.com/zyedidia/pty v1.1.2-0.20180126010845-30364665a244/go.mod h1:4y9l9yJZNxRa7GB/fB+mmDmGkG3CqmzLf4vUxGGotEA=
-github.com/zyedidia/tcell v0.0.0-20190204041104-518c15c24302 h1:ruNSURcO81y+J+XnqrLLt+zxcdFtq8QNoZfWXSsybYQ=
-github.com/zyedidia/tcell v0.0.0-20190204041104-518c15c24302/go.mod h1:yXgdp23+aW8OMENYVBvpKoeiBtjaVWJ9HhpPDu6LBfM=
 github.com/zyedidia/tcell v0.0.0-20191219170756-59b50b23fa9b h1:cryFENlMxJJrkimVx/CUMFDCxC4vpmey2x3A3tAgTNM=
 github.com/zyedidia/tcell v0.0.0-20191219170756-59b50b23fa9b/go.mod h1:yXgdp23+aW8OMENYVBvpKoeiBtjaVWJ9HhpPDu6LBfM=
 github.com/zyedidia/terminal v0.0.0-20180726154117-533c623e2415 h1:752dTQ5OatJ9M5ULK2+9lor+nzyZz+LYDo3WGngg3Rc=
 github.com/zyedidia/terminal v0.0.0-20180726154117-533c623e2415/go.mod h1:8leT8G0Cm8NoJHdrrKHyR9MirWoF4YW7pZh06B6H+1E=
-golang.org/x/sys v0.0.0-20180903190138-2b024373dcd9 h1:lkiLiLBHGoH3XnqSLUIaBsilGMUjI+Uy2Xu2JLUtTas=
-golang.org/x/sys v0.0.0-20180903190138-2b024373dcd9/go.mod h1:STP8DvDyc/dI5b8T5hshtkjS+E42TnysNCUPdjciGhY=
 golang.org/x/text v0.3.0 h1:g61tztE5qeGQ89tm6NTjjM9VPIm088od1l6aSorWRWg=
 golang.org/x/text v0.3.0/go.mod h1:NqM8EUOU14njkJ3fqMW+pc6Ldnwhi/IjpwHt7yyuwOQ=
-gopkg.in/DATA-DOG/go-sqlmock.v1 v1.3.0 h1:FVCohIoYO7IJoDDVpV2pdq7SgrMH6wHnuTyrdrxJNoY=
-gopkg.in/DATA-DOG/go-sqlmock.v1 v1.3.0/go.mod h1:OdE7CF6DbADk7lN8LIKRzRJTTZXIjtWgA5THM5lhBAw=
 gopkg.in/check.v1 v0.0.0-20161208181325-20d25e280405/go.mod h1:Co6ibVJAznAaIkqp8huTwlJQCZ016jof/cbN4VW5Yz0=
-gopkg.in/check.v1 v1.0.0-20180628173108-788fd7840127 h1:qIbj1fsPNlZgppZ+VLlY7N33q108Sa+fhmuc+sWQYwY=
-gopkg.in/check.v1 v1.0.0-20180628173108-788fd7840127/go.mod h1:Co6ibVJAznAaIkqp8huTwlJQCZ016jof/cbN4VW5Yz0=
-gopkg.in/sourcemap.v1 v1.0.5 h1:inv58fC9f9J3TK2Y2R1NPntXEn3/wjWHkonhIUODNTI=
-gopkg.in/sourcemap.v1 v1.0.5/go.mod h1:2RlvNNSMglmRrcvhfuzp4hQHwOtjxlbjX7UPY/GXb78=
 gopkg.in/yaml.v2 v2.2.2 h1:ZCJp+EgiOT7lHqUV2J862kp8Qj64Jo6az82+3Td9dZw=
 gopkg.in/yaml.v2 v2.2.2/go.mod h1:hI93XBmqTisBFMUTm0b8Fm+jr3Dg1NNxqwp+5A1VGuI=
 layeh.com/gopher-luar v1.0.4 h1:BFgt94J/CXh4HkDcE2b7A7pBaVeQKEVfHEBRKL/K/Tc=

tools/build-version.go

@@ -26,7 +26,7 @@ func getTag(match ...string) (string, *semver.PRVersion) {
 			}
 		}
 
-		return tagParts[0], nil
+		return string(tag), nil
 	}
 }