docs: add 2.4.9 release notes
docs: add 2.4.9 release notes

mlaval/angular,pkozlowski-opensource/angular,juleskremer/angular,graveto/angular,ocombe/angular,alxhub/angular,alxhub/angular,rkirov/angular,robwormald/angular,smartm0use/angular,mdegoo/angular,filipesilva/angular,alexeagle/angular,rkirov/angular,Toxicable/angular,vsavkin/angular,brandonroberts/angular,StephenFluin/angular,heathkit/angular,mgol/angular,mdegoo/angular,heathkit/angular,jasonaden/angular,trshafer/angular,mlaval/angular,LucasSloan/angular,ValtoFrameworks/Angular-2,vamsivarikuti/angular,nosovk/angular,petebacondarwin/angular,dsebastien/angular,hansl/angular,mdegoo/angular,snaptech/angular,rjamet/angular,gjungb/angular,vicb/angular,chrisse27/angular,kegluneq/angular,hansl/angular,mgechev/angular,vsavkin/angular,mprobst/angular,Brocco/angular,trshafer/angular,IdeaBlade/angular,trshafer/angular,mgol/angular,wKoza/angular,gjungb/angular,royling/angular,petebacondarwin/angular,diestrin/angular,angularbrasil/angular,gdi2290/angular,snaptech/angular,hansl/angular,juleskremer/angular,NathanWalker/angular,mgechev/angular,smartm0use/angular,kwalrath/angular,dsebastien/angular,juristr/angular,tbosch/angular,manekinekko/angular,aboveyou00/angular,sarunint/angular,mgechev/angular,vamsivarikuti/angular,juristr/angular,dtoroshin/n2oDoc,ValtoFrameworks/Angular-2,Toxicable/angular,mgol/angular,angularbrasil/angular,kegluneq/angular,ValtoFrameworks/Angular-2,jonrimmer/angular,ultrasonicsoft/angular,dtoroshin/n2oDoc,alxhub/angular,StephenFluin/angular,LucasSloan/angular,kwalrath/angular,meeroslav/angular,ultrasonicsoft/angular,gjungb/angular,pkozlowski-opensource/angular,vikerman/angular,nosovk/angular,wKoza/angular,petebacondarwin/angular,chrisse27/angular,angular-indonesia/angular,nosovk/angular,diestrin/angular,aboveyou00/angular,ghetolay/angular,wKoza/angular,souvikbasu/angular,gdi2290/angular,cironunes/angular,manekinekko/angular,juleskremer/angular,vicb/angular,NathanWalker/angular,kylecordes/angular,sjtrimble/angular,souvikbasu/angular,sarunint/angular,mzgol/angular,IdeaBlade/angular,mgiambalvo/angular,LucasSloan/angular,ValtoFrameworks/Angular-2,dsebastien/angular,petebacondarwin/angular,mprobst/angular,ultrasonicsoft/angular,mdegoo/angular,vikerman/angular,chrisse27/angular,angular-indonesia/angular,mprobst/angular,pk-karthik/framework-js-angular,brandonroberts/angular,angular-indonesia/angular,robwormald/angular,jasonaden/angular,shairez/angular,NathanWalker/angular,angularbrasil/angular,juristr/angular,ghetolay/angular,graveto/angular,gnomeontherun/angular,cexbrayat/angular,petebacondarwin/angular,alexeagle/angular,sjtrimble/angular,aboveyou00/angular,dsebastien/angular,kegluneq/angular,IgorMinar/angular,mikeybyker/angular,blesh/angular,aboveyou00/angular,gjungb/angular,kara/angular,mprobst/angular,juleskremer/angular,chrisse27/angular,sarunint/angular,mikeybyker/angular,vsavkin/angular,chuckjaz/angular,sarunint/angular,shairez/angular,graveto/angular,alexeagle/angular,kara/angular,robwormald/angular,royling/angular,wKoza/angular,dtoroshin/n2oDoc,pk-karthik/framework-js-angular,IdeaBlade/angular,mhevery/angular,kara/angular,mzgol/angular,mikeybyker/angular,chuckjaz/angular,IgorMinar/angular,mprobst/angular,LucasSloan/angular,mzgol/angular,cironunes/angular,gdi2290/angular,ocombe/angular,trshafer/angular,Toxicable/angular,vicb/angular,snaptech/angular,tbosch/angular,rkirov/angular,IgorMinar/angular,heathkit/angular,vikerman/angular,ghetolay/angular,trshafer/angular,NathanWalker/angular,souvikbasu/angular,filipesilva/angular,IdeaBlade/angular,vamsivarikuti/angular,matsko/angular,pkozlowski-opensource/angular,kylecordes/angular,kylecordes/angular,juristr/angular,mzgol/angular,dsebastien/angular,ocombe/angular,manekinekko/angular,chalin/angular,dtoroshin/n2oDoc,NathanWalker/angular,mprobst/angular,gkalpak/angular,rkirov/angular,manekinekko/angular,Brocco/angular,jonrimmer/angular,filipesilva/angular,kwalrath/angular,smartm0use/angular,vikerman/angular,SaltyDH/angular,jasonaden/angular,mgiambalvo/angular,cironunes/angular,aboveyou00/angular,mgiambalvo/angular,gdi2290/angular,gkalpak/angular,brandonroberts/angular,kylecordes/angular,cexbrayat/angular,blesh/angular,diestrin/angular,mzgol/angular,JiaLiPassion/angular,Toxicable/angular,snaptech/angular,rkirov/angular,SaltyDH/angular,angular/angular,JiaLiPassion/angular,brandonroberts/angular,LucasSloan/angular,smartm0use/angular,hansl/angular,IdeaBlade/angular,mhevery/angular,chalin/angular,snaptech/angular,mhevery/angular,ultrasonicsoft/angular,gnomeontherun/angular,IgorMinar/angular,IgorMinar/angular,ocombe/angular,vsavkin/angular,kara/angular,filipesilva/angular,petebacondarwin/angular,robwormald/angular,chuckjaz/angular,ghetolay/angular,cironunes/angular,pk-karthik/framework-js-angular,filipesilva/angular,SaltyDH/angular,jasonaden/angular,chrisse27/angular,vamsivarikuti/angular,angularbrasil/angular,jonrimmer/angular,mhevery/angular,ocombe/angular,brandonroberts/angular,mlaval/angular,chuckjaz/angular,hansl/angular,brandonroberts/angular,meeroslav/angular,pk-karthik/framework-js-angular,souvikbasu/angular,alxhub/angular,meeroslav/angular,vicb/angular,JiaLiPassion/angular,rjamet/angular,juristr/angular,mgechev/angular,Toxicable/angular,Brocco/angular,tbosch/angular,shairez/angular,royling/angular,SaltyDH/angular,graveto/angular,ultrasonicsoft/angular,mgiambalvo/angular,royling/angular,matsko/angular,LucasSloan/angular,mgol/angular,StephenFluin/angular,mgiambalvo/angular,rjamet/angular,matsko/angular,pkozlowski-opensource/angular,blesh/angular,matsko/angular,StephenFluin/angular,smartm0use/angular,mdegoo/angular,gkalpak/angular,cironunes/angular,vamsivarikuti/angular,kara/angular,alexeagle/angular,mlaval/angular,graveto/angular,jonrimmer/angular,matsko/angular,blesh/angular,kwalrath/angular,kara/angular,heathkit/angular,blesh/angular,kwalrath/angular,aboveyou00/angular,kylecordes/angular,kylecordes/angular,angular/angular,dtoroshin/n2oDoc,dsebastien/angular,jasonaden/angular,JiaLiPassion/angular,robwormald/angular,juleskremer/angular,meeroslav/angular,mdegoo/angular,mgol/angular,tbosch/angular,sjtrimble/angular,sarunint/angular,mlaval/angular,gjungb/angular,mzgol/angular,heathkit/angular,snaptech/angular,SaltyDH/angular,gkalpak/angular,jasonaden/angular,mgechev/angular,souvikbasu/angular,shairez/angular,ValtoFrameworks/Angular-2,wKoza/angular,ghetolay/angular,mikeybyker/angular,rkirov/angular,shairez/angular,ultrasonicsoft/angular,IgorMinar/angular,NathanWalker/angular,juristr/angular,vsavkin/angular,Brocco/angular,angular/angular,gnomeontherun/angular,sjtrimble/angular,vikerman/angular,vicb/angular,gdi2290/angular,gnomeontherun/angular,manekinekko/angular,Toxicable/angular,angularbrasil/angular,pkozlowski-opensource/angular,alxhub/angular,mhevery/angular,pk-karthik/framework-js-angular,StephenFluin/angular,cexbrayat/angular,hansl/angular,sjtrimble/angular,nosovk/angular,tbosch/angular,angularbrasil/angular,mikeybyker/angular,kegluneq/angular,mhevery/angular,chalin/angular,wKoza/angular,gdi2290/angular,manekinekko/angular,alexeagle/angular,mgol/angular,angular/angular,cexbrayat/angular,alexeagle/angular,royling/angular,graveto/angular,nosovk/angular,vikerman/angular,rjamet/angular,heathkit/angular,jonrimmer/angular,diestrin/angular,trshafer/angular,jonrimmer/angular,angular-indonesia/angular,cexbrayat/angular,chuckjaz/angular,Brocco/angular,meeroslav/angular,Brocco/angular,kegluneq/angular,kegluneq/angular,sarunint/angular,robwormald/angular,chuckjaz/angular,vicb/angular,chalin/angular,ocombe/angular,cironunes/angular