v5.1.9: Merge pull request #96 from patrickbrouwers/patch-1

HtmlBuilder shouldn't depend on concrete implementation

v5.1.8: Merge pull request #119 from mul14/add-color-input-type

Add color input type

v5.1.7: Merge pull request #108 from martinbean/feature/datetime-inputs

Add datetime input types

v5.1.6: Merge pull request #78 from vlakoff/form-builder

Don't double escape in Form::option()

v5.1.5: Merge pull request #63 from rumeau/patch-1

Modify Placeholder to not send data

v5.1.4: Merge pull request #63 from rumeau/patch-1

Modify Placeholder to not send data

v5.1.3: Renaming "optional" to "placeholder" Re: #60

Closes #60

v5.1.2: Merge pull request #58 from kirkaracha/5.1

Added tel input type and test

v5.1.1: Removing PHP 5.4

Signed-off-by: Adam Engebretson <adam@enge.me>

Tagging 5.1 Stable

Tagging 5.1 stable

Signed-off-by: Adam Engebretson <adam@enge.me>