Update version to 1.4.0.dev
Update version to 1.4.0.dev

Since plugin devs might not be aware of the bump, at least they'll know that master is now 1.4 after a `bundle update`

/cc @mitchellh
Sgoettschkes/vagrant,juiceinc/vagrant,clinstid/vagrant,philoserf/vagrant,obnoxxx/vagrant,aneeshusa/vagrant,dharmab/vagrant,Avira/vagrant,PatrickLang/vagrant,evverx/vagrant,MiLk/vagrant,Endika/vagrant,Endika/vagrant,genome21/vagrant,senglin/vagrant,wkolean/vagrant,jmanero/vagrant,ArloL/vagrant,rivy/vagrant,tomfanning/vagrant,dharmab/vagrant,tknerr/vagrant,philwrenn/vagrant,h4ck3rm1k3/vagrant,stephancom/vagrant,myrjola/vagrant,Ninir/vagrant,dustymabe/vagrant,kalabiyau/vagrant,cgvarela/vagrant,ianmiell/vagrant,gpkfr/vagrant,gajdaw/vagrant,dharmab/vagrant,clinstid/vagrant,loren-osborn/vagrant,jfchevrette/vagrant,justincampbell/vagrant,mitchellh/vagrant,gbarberi/vagrant,kamigerami/vagrant,tknerr/vagrant,genome21/vagrant,loren-osborn/vagrant,zsjohny/vagrant,lukebakken/vagrant,bryson/vagrant,BlakeMesdag/vagrant,rivy/vagrant,shtouff/vagrant,jkburges/vagrant,clinstid/vagrant,patrys/vagrant,ferventcoder/vagrant,muhanadra/vagrant,loren-osborn/vagrant,jmanero/vagrant,jtopper/vagrant,cgvarela/vagrant,modulexcite/vagrant,sax/vagrant,jkburges/vagrant,Chhed13/vagrant,tomfanning/vagrant,tschortsch/vagrant,fnewberg/vagrant,teotihuacanada/vagrant,johntron/vagrant,darkn3rd/vagrant,patrys/vagrant,tomfanning/vagrant,ArloL/vagrant,PatOShea/vagrant,PatOShea/vagrant,nickryand/vagrant,jkburges/vagrant,invernizzi-at-google/vagrant,denisbr/vagrant,mwarren/vagrant,gpkfr/vagrant,otagi/vagrant,blueyed/vagrant,ArloL/vagrant,wangfakang/vagrant,chrisroberts/vagrant,zsjohny/vagrant,bryson/vagrant,darkn3rd/vagrant,Avira/vagrant,teotihuacanada/vagrant,miguel250/vagrant,gbarberi/vagrant,jean/vagrant,doy/vagrant,signed8bit/vagrant,mpoeter/vagrant,mitchellh/vagrant,apertoso/vagrant,krig/vagrant,channui/vagrant,philwrenn/vagrant,sferik/vagrant,BlakeMesdag/vagrant,benizi/vagrant,ianmiell/vagrant,jkburges/vagrant,gitebra/vagrant,vamegh/vagrant,h4ck3rm1k3/vagrant,pwnall/vagrant,dustymabe/vagrant,philoserf/vagrant,shtouff/vagrant,sax/vagrant,taliesins/vagrant,doy/vagrant,apertoso/vagrant,evverx/vagrant,signed8bit/vagrant,gpkfr/vagrant,justincampbell/vagrant,benizi/vagrant,bdwyertech/vagrant,Chhunlong/vagrant,Avira/vagrant,bheuvel/vagrant,tbriggs-curse/vagrant,justincampbell/vagrant,jtopper/vagrant,wkolean/vagrant,gitebra/vagrant,kalabiyau/vagrant,gbarberi/vagrant,juiceinc/vagrant,dustymabe/vagrant,darkn3rd/vagrant,tbarrongh/vagrant,marxarelli/vagrant,tomfanning/vagrant,tbarrongh/vagrant,obnoxxx/vagrant,kalabiyau/vagrant,stephancom/vagrant,TheBigBear/vagrant,teotihuacanada/vagrant,cgvarela/vagrant,otagi/vagrant,blueyed/vagrant,ferventcoder/vagrant,chrisvire/vagrant,krig/vagrant,lukebakken/vagrant,aneeshusa/vagrant,stephancom/vagrant,TheBigBear/vagrant,tjanez/vagrant,gitebra/vagrant,petems/vagrant,jmanero/vagrant,zsjohny/vagrant,h4ck3rm1k3/vagrant,tjanez/vagrant,doy/vagrant,tschortsch/vagrant,genome21/vagrant,tbriggs-curse/vagrant,philwrenn/vagrant,jtopper/vagrant,benh57/vagrant,crashlytics/vagrant,nickryand/vagrant,evverx/vagrant,chrisroberts/vagrant,patrys/vagrant,denisbr/vagrant,Chhed13/vagrant,theist/vagrant,jfchevrette/vagrant,sferik/vagrant,jhoblitt/vagrant,modulexcite/vagrant,legal90/vagrant,petems/vagrant,petems/vagrant,senglin/vagrant,mkuzmin/vagrant,jean/vagrant,modulexcite/vagrant,channui/vagrant,signed8bit/vagrant,jean/vagrant,legal90/vagrant,mitchellh/vagrant,sideci-sample/sideci-sample-vagrant,legal90/vagrant,dhoer/vagrant,cgvarela/vagrant,tschortsch/vagrant,Chhunlong/vagrant,bheuvel/vagrant,h4ck3rm1k3/vagrant,tjanez/vagrant,miguel250/vagrant,lonniev/vagrant,aaam/vagrant,crashlytics/vagrant,jberends/vagrant,janek-warchol/vagrant,denisbr/vagrant,gbarberi/vagrant,jhoblitt/vagrant,doy/vagrant,lonniev/vagrant,nickryand/vagrant,PatrickLang/vagrant,teotihuacanada/vagrant,krig/vagrant,mwrock/vagrant,senglin/vagrant,blueyed/vagrant,carlosefr/vagrant,philoserf/vagrant,aaam/vagrant,bshurts/vagrant,pwnall/vagrant,chrisroberts/vagrant,iNecas/vagrant,gitebra/vagrant,jmanero/vagrant,PatrickLang/vagrant,sni/vagrant,Avira/vagrant,theist/vagrant,bshurts/vagrant,mwrock/vagrant,Chhed13/vagrant,tbarrongh/vagrant,carlosefr/vagrant,patrys/vagrant,Ninir/vagrant,taliesins/vagrant,jfchevrette/vagrant,mwarren/vagrant,marxarelli/vagrant,kamazee/vagrant,justincampbell/vagrant,signed8bit/vagrant,jhoblitt/vagrant,bshurts/vagrant,janek-warchol/vagrant,invernizzi-at-google/vagrant,tbriggs-curse/vagrant,ferventcoder/vagrant,gajdaw/vagrant,vamegh/vagrant,invernizzi-at-google/vagrant,dustymabe/vagrant,jfchevrette/vagrant,ArloL/vagrant,juiceinc/vagrant,iNecas/vagrant,Chhunlong/vagrant,aaam/vagrant,benizi/vagrant,bheuvel/vagrant,sideci-sample/sideci-sample-vagrant,stephancom/vagrant,philoserf/vagrant,genome21/vagrant,benh57/vagrant,ferventcoder/vagrant,lukebakken/vagrant,lukebakken/vagrant,wangfakang/vagrant,mwrock/vagrant,tbarrongh/vagrant,lonniev/vagrant,sni/vagrant,iNecas/vagrant,loren-osborn/vagrant,jberends/vagrant,PatrickLang/vagrant,mkuzmin/vagrant,pwnall/vagrant,muhanadra/vagrant,wkolean/vagrant,lonniev/vagrant,rivy/vagrant,dhoer/vagrant,bdwyertech/vagrant,sni/vagrant,Sgoettschkes/vagrant,invernizzi-at-google/vagrant,otagi/vagrant,Chhunlong/vagrant,bshurts/vagrant,mpoeter/vagrant,Chhed13/vagrant,fnewberg/vagrant,senglin/vagrant,jtopper/vagrant,jberends/vagrant,gpkfr/vagrant,sferik/vagrant,crashlytics/vagrant,bheuvel/vagrant,mkuzmin/vagrant,aneeshusa/vagrant,jhoblitt/vagrant,sax/vagrant,mitchellh/vagrant,tbriggs-curse/vagrant,darkn3rd/vagrant,shtouff/vagrant,sni/vagrant,Endika/vagrant,muhanadra/vagrant,pwnall/vagrant,johntron/vagrant,tknerr/vagrant,myrjola/vagrant,PatOShea/vagrant,Endika/vagrant,ianmiell/vagrant,juiceinc/vagrant,carlosefr/vagrant,miguel250/vagrant,Ninir/vagrant,MiLk/vagrant,MiLk/vagrant,theist/vagrant,janek-warchol/vagrant,PatOShea/vagrant,kamazee/vagrant,jberends/vagrant,p0deje/vagrant,vamegh/vagrant,marxarelli/vagrant,dhoer/vagrant,johntron/vagrant,taliesins/vagrant,ianmiell/vagrant,zsjohny/vagrant,vamegh/vagrant,obnoxxx/vagrant,apertoso/vagrant,shtouff/vagrant,p0deje/vagrant,dharmab/vagrant,benh57/vagrant,krig/vagrant,janek-warchol/vagrant,kamigerami/vagrant,bdwyertech/vagrant,kamigerami/vagrant,sax/vagrant,wangfakang/vagrant,chrisvire/vagrant,dhoer/vagrant,mpoeter/vagrant,mkuzmin/vagrant,legal90/vagrant,fnewberg/vagrant,crashlytics/vagrant,wangfakang/vagrant,bryson/vagrant,Sgoettschkes/vagrant,tschortsch/vagrant,TheBigBear/vagrant,marxarelli/vagrant,myrjola/vagrant,p0deje/vagrant,tjanez/vagrant,aaam/vagrant,miguel250/vagrant,bdwyertech/vagrant,bryson/vagrant,chrisvire/vagrant,nickryand/vagrant,benizi/vagrant,chrisvire/vagrant,mpoeter/vagrant,theist/vagrant,johntron/vagrant,modulexcite/vagrant,apertoso/vagrant,myrjola/vagrant,carlosefr/vagrant,sideci-sample/sideci-sample-vagrant,channui/vagrant,chrisroberts/vagrant,petems/vagrant,BlakeMesdag/vagrant,benh57/vagrant,gajdaw/vagrant,philwrenn/vagrant,blueyed/vagrant,kamigerami/vagrant,Sgoettschkes/vagrant,kamazee/vagrant,mwarren/vagrant,denisbr/vagrant,otagi/vagrant,muhanadra/vagrant,wkolean/vagrant,kamazee/vagrant,mwrock/vagrant,rivy/vagrant,mwarren/vagrant,TheBigBear/vagrant,taliesins/vagrant,tknerr/vagrant,jean/vagrant,kalabiyau/vagrant,fnewberg/vagrant,aneeshusa/vagrant