add tree_adapter usage flag

added in checks in PythonAPI to trigger Value errors in case of non dyn

added required check for python API

ST update + op check update

revert segSum change

updated gatherV2 and SplitOp check

added shape -1 sanity check - splitOp

slight refactor in unseg-Min/Max

lintfix

lint fix

fix docstring

From: @zyli2020
Reviewed-by: @cristoval,@limingqi107
Signed-off-by: @limingqi107

From: @david-he91
Reviewed-by: @liangchenghui,@linqingke
Signed-off-by: @liangchenghui

From: @yuchaojie
Reviewed-by: @linqingke,@liangchenghui
Signed-off-by: @linqingke

From: @yanzhenxiang2020
Reviewed-by: 
Signed-off-by:

From: @limingqi107
Reviewed-by: @cristoval,@kisnwang
Signed-off-by: @cristoval

From: @huangxinjing
Reviewed-by: @liangchenghui,@stsuteng
Signed-off-by: @stsuteng

From: @alouhahahahaha
Reviewed-by: @zhoufeng54,@xu-yfei
Signed-off-by: @xu-yfei

From: @yanzhenxiang2020
Reviewed-by: 
Signed-off-by:

From: @lzkcode
Reviewed-by: @zhanghaibo5
Signed-off-by:

From: @lx0095
Reviewed-by: @zhanghaibo5,@zhang_xue_tong
Signed-off-by: @zhang_xue_tong

From: @lichen666
Reviewed-by: @limingqi107,@stsuteng
Signed-off-by: @limingqi107,@stsuteng

From: @VectorSL
Reviewed-by: @cristoval,@limingqi107
Signed-off-by: @limingqi107

From: @anancds
Reviewed-by: 
Signed-off-by:

From: @wuxuejian
Reviewed-by: @kisnwang,@c_34
Signed-off-by: @c_34

From: @ling_qiao_min
Reviewed-by: @zhang_xue_tong,@zhanghaibo5
Signed-off-by: @zhang_xue_tong

From: @yao_yf
Reviewed-by: @kisnwang,@stsuteng
Signed-off-by: @stsuteng

From: @louisncu
Reviewed-by: @zhanghaibo5,@HilbertDavid
Signed-off-by: @HilbertDavid

From: @louisncu
Reviewed-by: @zhanghaibo5,@HilbertDavid
Signed-off-by: @HilbertDavid

From: @zhoufeng54
Reviewed-by: @xsmq,@xu-yfei
Signed-off-by: @xu-yfei

From: @lianliguang
Reviewed-by: @kisnwang,@zhoufeng54
Signed-off-by: @zhoufeng54

From: @lizhenglong1992
Reviewed-by: @zhoufeng54,@pandoublefeng
Signed-off-by: @pandoublefeng

From: @linqingke
Reviewed-by: @oacjiewen,@wuxuejian
Signed-off-by: @wuxuejian

From: @bai-yangfan
Reviewed-by: @kingxian,@c_34
Signed-off-by: @kingxian

From: @tiancixiao
Reviewed-by: @heleiwang,@liucunwei
Signed-off-by: @liucunwei