v2.1.0

Fixes:

• fixed inconsistent emission of leading/trailing newlines when writing a table to an ostream (#48) (@levicki)
• fixed Wcast-align warning spam on ARM
• fixed array::insert not working correctly in some cases
• fixed node::value_or() not having the same semantics as node::value() (#50) (@whiterabbit963)
• fixed 'misleading assignment' of rvalue node_views (#52) (@Reedbeta)
• fixed some issues handling infinities and NaNs (#51) (@Reedbeta)
• fixed some minor documentation issues

Additions:

• added support for __fp16, _Float16, __float128, __int128_t and __uint128_t
• added copy construction/assignment for arrays, tables and values
• added insert, emplace, push_back etc. compatibility with node_views
• added node::is_homogenous
• added table::is_homogenous
• added value::is_homogenous (just for generic code's sake)
• added is_homogenous overload for identifying failure-causing element
• added implicit conversion operator from node to node_view (#52) (@Reedbeta)

Changes:

• renamed TOML_ALL_INLINE to TOML_HEADER_ONLY (the old name will still work, but is no longer documented)
• general cleanup