Fixed header inheritance
Added theming support
Used theming for font configuration
Updated pods
Fixed distorted icons in button
Activated adjusting of font size for labels by default
Fixed wrong font size of header title label

Simplified code
Fixed crash when adding options that are not copyable
Fixed crash when setting a nil placeholder in text view
Fixed layout of header view
Fixed setting of default appearance values in text label
Improved header label style
[Xcode] Touch Images.xcassets
[Style] Minor cleanup
[Workspace] Share the missing schemes
[Style] Fix indentation
[Style] Cleanup blank lines
[Style] Use two spaces instead of tabs for Ruby
 [Style] Don't use symbols for target names
[Podfile] Make dependencies of Podspec explicit only for library target