# Functions
Load will load a Filter from a file containing newline separated regular expressions.
New will create a Filter from a list of regular expressions, which are automatically anchored to the beginning of the string to be matched against.
Read will read a Filter from a reader containing newline separated regular expressions.
# Structs
A Filter contains a list of regular expressions matching pathnames which should be filtered out: excluded when building or not changed when pushing images to a sub.
A MergeableFilter may be used to combine multiple Filters, eliminating duplicate match expressions.