1.4.0.21: F-004, F-005, F-006 & F-007

See merge request !6

F-004 & F-007

See merge request !5

F-007: Add implementations/factory functions for primitive View specializations

F-006: Change `of` overload without indices to accept variadic parameters

See merge request !4

# Conflicts:
#   src/main/java/io/karma/sliced/slice/CharSlice.java

F-005: Add primitive View specializations and make all primitive Slice specializations extend from them

See merge request !3

F-005: Add primitive View specializations and make all primitive Slice specializations extend from them

1.3.0

See merge request !2

F-003: Add missing documentation before 1.3.0 release

See merge request !1